{"id":4279,"date":"2016-05-13T11:49:00","date_gmt":"2016-05-13T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/"},"modified":"2018-07-05T12:50:50","modified_gmt":"2018-07-05T07:20:50","slug":"ncert-solutions-for-class-7-science-light","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/","title":{"rendered":"NCERT solutions for Class 7 Science Light"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#NCERT_Class_7_Social_Science_Chapter_wise_Solutions\" >NCERT Class 7 Social Science Chapter wise Solutions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#NCERT_solutions_for_Class_7_Science_Light\" >NCERT solutions for Class 7 Science Light<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Class%E2%80%93VII_CHAPTER-15\" >Class\u2013VII (CHAPTER-15)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#LIGHT\" >LIGHT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_1_Fill_in_the_blanks\" >Question 1. Fill in the blanks:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_2Mark_%E2%80%9CT%E2%80%9D_if_the_statement_is_true_and_%E2%80%9CF_if_it_is_false\" >Question 2.Mark \u201cT\u201d if the statement is true and \u201cF\u2019 if it is false.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_3Match_the_items_given_in_Column_I_with_one_or_more_item_of_Column_II\" >Question 3.Match the items given in Column I with one or more item of Column II.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_4State_the_characteristic_of_the_image_formed_by_a_plane_mirror\" >Question 4.State the characteristic of the image formed by a plane mirror.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_5Find_out_the_letters_of_English_alphabet_or_any_other_language_known_to_you_in_which_the_image_formed_in_plane_mirror_appears_exactly_like_the_letter_itself_Discuss_your_findings\" >Question 5.Find out the letters of English alphabet or any other language known to you in which the image formed in plane mirror appears exactly like the letter itself. Discuss your findings.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_6What_is_a_virtual_image_Give_one_situation_where_a_virtual_image_is_formed\" >Question 6.What is a virtual image? Give one situation where a virtual image is formed.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_7State_the_differences_between_convex_and_a_concave_lens\" >Question 7.State the differences between convex and a concave lens.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_8Give_one_use_of_a_concave_and_a_convex_mirror\" >Question 8.Give one use of a concave and a convex mirror.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_9Which_type_of_lens_forms_always_a_real_image\" >Question 9.Which type of lens forms always a real image?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_10Which_type_of_lens_forms_always_a_virtual_image\" >Question 10.Which type of lens forms always a virtual image?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_11A_virtual_image_larger_than_the_object_can_be_produced_by_a\" >Question 11.A virtual image larger than the object can be produced by a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_12David_is_observing_his_image_in_a_plane_mirror_The_distance_between_the_mirror_and_his_image_is_4_m_if_he_moves_1_m_towards_the_mirror_then_the_distance_between_David_and_his_image_will_be\" >Question 12.David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. if he moves 1 m towards the mirror, then the distance between David and his image will be<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#Question_13The_rear_view_mirror_of_a_car_is_a_plane_mirror_A_driver_is_reversing_his_car_at_a_speed_of_2_ms_The_driver_sees_in_his_rear_view_mirror_the_image_of_a_truck_parked_behind_the_car_The_speed_at_which_the_image_of_the_truck_appears_to_approach_the_driver_will_be\" >Question 13.The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m\/s. The driver sees in his rear view mirror the image of a truck parked behind the car. The speed at which the image of the truck appears to approach the driver will be<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#NCERT_solutions_for_Class_7_Science\" >NCERT solutions for Class 7 Science<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#CBSE_app_for_Class_7\" >CBSE app for Class 7<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT solutions for Class 7 Science Light book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 7 Science chapter wise NCERT solution for Science Book all the chapters can be downloaded from our website and myCBSEguide mobile app for free.<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Science\u00a0Light <a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-07-science\/1525\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg\" alt=\"NCERT solutions for Class 7 Science Light\" width=\"157\" height=\"199\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Class_7_Social_Science_Chapter_wise_Solutions\"><\/span>NCERT Class 7 Social Science Chapter wise Solutions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>Nutrition in Plants<\/li>\n<li>Nutrition in Animals<\/li>\n<li>Fibre To Fabric<\/li>\n<li>Heat<\/li>\n<li>Acids Bases And Salts<\/li>\n<li>Physical And Chemical Changes<\/li>\n<li>Climate<\/li>\n<li>Winds Storms And Cyclones<\/li>\n<li>Soil<\/li>\n<li>Respiration In Organisms<\/li>\n<li>Transportation in Animals And Plants<\/li>\n<li>Reproduction In Plants<\/li>\n<li>Motion And Time<\/li>\n<li>Electric Current And Its Effects<\/li>\n<li>Light<\/li>\n<li>Water<\/li>\n<li>Forests: Our Lifeline<\/li>\n<li>Waste Water Story<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_solutions_for_Class_7_Science_Light\"><\/span>NCERT solutions for Class 7 Science Light<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Class%E2%80%93VII_CHAPTER-15\"><\/span><strong>Class\u2013VII (CHAPTER-15) <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"LIGHT\"><\/span><strong>LIGHT<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"Question_1_Fill_in_the_blanks\"><\/span><strong>Question 1. <\/strong>Fill in the blanks:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(a)An image that cannot be obtained on a screen is called &#8212;&#8212;&#8212;&#8212;&#8212;&#8211;.<\/p>\n<p>(b)Image formed by a concave &#8212;&#8212;&#8212;- is always virtual and smaller in size.<\/p>\n<p>(c)An image formed by a &#8212;&#8212;&#8212;&#8212;- mirror is always of the same size as that of the object.<\/p>\n<p>(d)An image which can be obtained on a screen is called a &#8212;&#8212;&#8212; image.<\/p>\n<p>(e)An image formed by a concave &#8212;&#8212;&#8212;&#8212;&#8212;- cannot be obtained on a screen.<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>Fill in the blanks:<\/p>\n<p>(a)An image that cannot be obtained on a screen is called <strong>virtual image<\/strong>.<\/p>\n<p>(b)Image formed by a concave <strong>mirror<\/strong> is always virtual and smaller in size.<\/p>\n<p>(c)An image formed by a <strong>plane<\/strong> mirror is always of the same size as that of the object.<\/p>\n<p>(d)An image which can be obtained on a screen is called a <strong>real<\/strong> image.<\/p>\n<p>(e)An image formed by a concave <strong>lens<\/strong> cannot be obtained on a screen.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Light<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_2Mark_%E2%80%9CT%E2%80%9D_if_the_statement_is_true_and_%E2%80%9CF_if_it_is_false\"><\/span><strong>Question 2.<\/strong>Mark \u201cT\u201d if the statement is true and \u201cF\u2019 if it is false.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(a)We can obtain an enlarged and erect image by a convex mirror. (T\/F)<\/p>\n<p>(b)A concave lens always forms a real image. (T\/F)<\/p>\n<p>(c)We can obtain a real, enlarged and inverted image by a concave mirror. (T\/F)<\/p>\n<p>(d)A real image cannot be obtained on screen. (T\/F)<\/p>\n<p>(e)A concave mirror always forms a real image. (T\/F)<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(a) F<\/p>\n<p>(b) F<\/p>\n<p>(c) T<\/p>\n<p>(d) F<\/p>\n<p>(e) F<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_3Match_the_items_given_in_Column_I_with_one_or_more_item_of_Column_II\"><\/span><strong>Question 3.<\/strong>Match the items given in Column I with one or more item of Column II.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<table style=\"width: 100%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>(a) A plane mirror<\/td>\n<td>(i) used as magnifying glass.<\/td>\n<\/tr>\n<tr>\n<td>(b) A convex mirror<\/td>\n<td>(ii) can form image of objects spread over large area.<\/td>\n<\/tr>\n<tr>\n<td>(c) A convex lens<\/td>\n<td>(iii) used by dentist to see enlarged image of teeth.<\/td>\n<\/tr>\n<tr>\n<td>(d) A concave mirror<\/td>\n<td>(iv) the image is always inverted and magnified.<\/td>\n<\/tr>\n<tr>\n<td>(e) A concave lens<\/td>\n<td>(v) the image is erect and of the same size than object.<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>(vi) the image is erect and smaller in size than the object.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Answer:<\/strong><\/p>\n<p>(a) (v)<\/p>\n<p>(b) (ii)<\/p>\n<p>(c) (i)<\/p>\n<p>(d) (iii)<\/p>\n<p>(e) (vi)<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Light<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_4State_the_characteristic_of_the_image_formed_by_a_plane_mirror\"><\/span><strong>Question<\/strong> 4.State the characteristic of the image formed by a plane mirror.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Characteristics of image formed by plane mirror are:<\/p>\n<p>(a) Image distance is equal to object distance.<\/p>\n<p>(b) image height is equal to object height.<\/p>\n<p>(c) Image is virtual and erect<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_5Find_out_the_letters_of_English_alphabet_or_any_other_language_known_to_you_in_which_the_image_formed_in_plane_mirror_appears_exactly_like_the_letter_itself_Discuss_your_findings\"><\/span><strong>Question<\/strong> 5.Find out the letters of English alphabet or any other language known to you in which the image formed in plane mirror appears exactly like the letter itself. Discuss your findings.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>A, H, O, T, U, V, W, X, Y.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Light<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_6What_is_a_virtual_image_Give_one_situation_where_a_virtual_image_is_formed\"><\/span><strong>Question<\/strong> 6.What is a virtual image? Give one situation where a virtual image is formed.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>The image that cannot be formed on a screen is called virtual image. Plane mirror always form virtual image.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_7State_the_differences_between_convex_and_a_concave_lens\"><\/span><strong>Question<\/strong> 7.State the differences between convex and a concave lens.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Difference between convex lens and concave lens:<\/p>\n<table style=\"width: 100%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Concex image<\/td>\n<td>Concave image<\/td>\n<\/tr>\n<tr>\n<td>\n<ol>\n<li>Thick at middle, thin at edge.<\/li>\n<li>Can form real image.<\/li>\n<\/ol>\n<\/td>\n<td>\n<ol>\n<li>Thin at middle, thick at edge.<\/li>\n<li>Cannot form real iamge.<\/li>\n<\/ol>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Light<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_8Give_one_use_of_a_concave_and_a_convex_mirror\"><\/span><strong>Question<\/strong> 8.Give one use of a concave and a convex mirror.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Concave mirror \u2013 used by dentist to see teeth.<\/p>\n<p>Convex mirror \u2013 used in vehicles as rear view mirror.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_9Which_type_of_lens_forms_always_a_real_image\"><\/span><strong>Question<\/strong> <strong>9.<\/strong>Which type of lens forms always a real image?<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Concave mirror.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_10Which_type_of_lens_forms_always_a_virtual_image\"><\/span><strong>Question<\/strong> 10.Which type of lens forms always a virtual image?<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>Choose the correct option in questions 11-13.<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>Concave lens.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Light<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_11A_virtual_image_larger_than_the_object_can_be_produced_by_a\"><\/span><strong>Question<\/strong> 11.A virtual image larger than the object can be produced by a<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i)Concave lens<\/p>\n<p>(ii)Concave mirror<\/p>\n<p>(iii)Convex lens<\/p>\n<p>(iv)Plane mirror<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(iii)concave mirror.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_12David_is_observing_his_image_in_a_plane_mirror_The_distance_between_the_mirror_and_his_image_is_4_m_if_he_moves_1_m_towards_the_mirror_then_the_distance_between_David_and_his_image_will_be\"><\/span><strong>Question<\/strong> 12.David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. if he moves 1 m towards the mirror, then the distance between David and his image will be<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i) 3 m<\/p>\n<p>(ii) 5 m<\/p>\n<p>(iii) 6 m<\/p>\n<p>(iv) 8 m<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(iii) 6 cm.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Light<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_13The_rear_view_mirror_of_a_car_is_a_plane_mirror_A_driver_is_reversing_his_car_at_a_speed_of_2_ms_The_driver_sees_in_his_rear_view_mirror_the_image_of_a_truck_parked_behind_the_car_The_speed_at_which_the_image_of_the_truck_appears_to_approach_the_driver_will_be\"><\/span><strong>Question<\/strong> 13.The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m\/s. The driver sees in his rear view mirror the image of a truck parked behind the car. The speed at which the image of the truck appears to approach the driver will be<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i) 1 m\/s<\/p>\n<p>(ii) 2 m\/s<\/p>\n<p>(iii) 4 m\/s<\/p>\n<p>(iv) 8 m\/s.<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(iii) 4 m\/s.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_solutions_for_Class_7_Science\"><\/span>NCERT solutions for Class 7 Science<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 7 Science PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 7 Science includes text book solutions for CBSE Class 7 Science have total 18 chapters. 7 Science NCERT Solutions in PDF for free Download on our website. Ncert Science class 7 solutions PDF and Social Science ncert class 7 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_app_for_Class_7\"><\/span>CBSE app for Class 7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 7 Social Science, Computer Science, Hindi ,English, Maths Science do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT solutions for Class 7 Science Light book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 7 Science chapter wise NCERT &#8230; <a title=\"NCERT solutions for Class 7 Science Light\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\" aria-label=\"More on NCERT solutions for Class 7 Science Light\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":-1,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[281,1390],"tags":[283,1535,216,349],"class_list":["post-4279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ncert-solutions","category-science-cbse-class-07","tag-cbse-study-material","tag-class-7","tag-ncert-solutions","tag-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NCERT solutions for Class 7 Science Light | myCBSEguide<\/title>\n<meta name=\"description\" content=\"NCERT solutions for Class 7 Science Light in PDF format for free download. NCERT Solutions Class 7 Science.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NCERT solutions for Class 7 Science Light | myCBSEguide\" \/>\n<meta property=\"og:description\" content=\"NCERT solutions for Class 7 Science Light in PDF format for free download. NCERT Solutions Class 7 Science.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\" \/>\n<meta property=\"og:site_name\" content=\"myCBSEguide\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/mycbseguide\/\" \/>\n<meta property=\"article:published_time\" content=\"2016-05-13T06:19:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-07-05T07:20:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mycbseguide.com\/blog\/wp-content\/uploads\/2016\/09\/mycbseguide_n.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"599\" \/>\n\t<meta property=\"og:image:height\" content=\"242\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"myCBSEguide\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mycbseguide\" \/>\n<meta name=\"twitter:site\" content=\"@mycbseguide\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"myCBSEguide\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\"},\"author\":{\"name\":\"myCBSEguide\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/#\/schema\/person\/10b8c7820ff29025ab8524da7c025f65\"},\"headline\":\"NCERT solutions for Class 7 Science Light\",\"datePublished\":\"2016-05-13T06:19:00+00:00\",\"dateModified\":\"2018-07-05T07:20:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\"},\"wordCount\":1059,\"commentCount\":3,\"publisher\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg\",\"keywords\":[\"CBSE Study Material\",\"Class 7\",\"NCERT Solutions\",\"Science\"],\"articleSection\":[\"NCERT Solutions\",\"Science\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\",\"url\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\",\"name\":\"NCERT solutions for Class 7 Science Light | myCBSEguide\",\"isPartOf\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg\",\"datePublished\":\"2016-05-13T06:19:00+00:00\",\"dateModified\":\"2018-07-05T07:20:50+00:00\",\"description\":\"NCERT solutions for Class 7 Science Light in PDF format for free download. NCERT Solutions Class 7 Science.\",\"breadcrumb\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage\",\"url\":\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg\",\"contentUrl\":\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/mycbseguide.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"NCERT Solutions\",\"item\":\"https:\/\/mycbseguide.com\/blog\/category\/ncert-solutions\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"NCERT solutions for Class 7 Science Light\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/#website\",\"url\":\"https:\/\/mycbseguide.com\/blog\/\",\"name\":\"myCBSEguide\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/mycbseguide.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/#organization\",\"name\":\"myCBSEguide\",\"url\":\"https:\/\/mycbseguide.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/mycbseguide.com\/blog\/wp-content\/uploads\/2016\/04\/books_square.png\",\"contentUrl\":\"https:\/\/mycbseguide.com\/blog\/wp-content\/uploads\/2016\/04\/books_square.png\",\"width\":180,\"height\":180,\"caption\":\"myCBSEguide\"},\"image\":{\"@id\":\"https:\/\/mycbseguide.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/mycbseguide\/\",\"https:\/\/x.com\/mycbseguide\",\"https:\/\/www.linkedin.com\/company\/mycbseguide\/\",\"http:\/\/in.pinterest.com\/mycbseguide\/\",\"https:\/\/www.youtube.com\/channel\/UCxuqSnnygFzwJG0pwogCNEQ\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/mycbseguide.com\/blog\/#\/schema\/person\/10b8c7820ff29025ab8524da7c025f65\",\"name\":\"myCBSEguide\",\"sameAs\":[\"http:\/\/mycbseguide.com\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"NCERT solutions for Class 7 Science Light | myCBSEguide","description":"NCERT solutions for Class 7 Science Light in PDF format for free download. NCERT Solutions Class 7 Science.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/","og_locale":"en_US","og_type":"article","og_title":"NCERT solutions for Class 7 Science Light | myCBSEguide","og_description":"NCERT solutions for Class 7 Science Light in PDF format for free download. NCERT Solutions Class 7 Science.","og_url":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/","og_site_name":"myCBSEguide","article_publisher":"https:\/\/www.facebook.com\/mycbseguide\/","article_published_time":"2016-05-13T06:19:00+00:00","article_modified_time":"2018-07-05T07:20:50+00:00","og_image":[{"width":599,"height":242,"url":"https:\/\/mycbseguide.com\/blog\/wp-content\/uploads\/2016\/09\/mycbseguide_n.jpg","type":"image\/jpeg"}],"author":"myCBSEguide","twitter_card":"summary_large_image","twitter_creator":"@mycbseguide","twitter_site":"@mycbseguide","twitter_misc":{"Written by":"myCBSEguide","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#article","isPartOf":{"@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/"},"author":{"name":"myCBSEguide","@id":"https:\/\/mycbseguide.com\/blog\/#\/schema\/person\/10b8c7820ff29025ab8524da7c025f65"},"headline":"NCERT solutions for Class 7 Science Light","datePublished":"2016-05-13T06:19:00+00:00","dateModified":"2018-07-05T07:20:50+00:00","mainEntityOfPage":{"@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/"},"wordCount":1059,"commentCount":3,"publisher":{"@id":"https:\/\/mycbseguide.com\/blog\/#organization"},"image":{"@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage"},"thumbnailUrl":"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg","keywords":["CBSE Study Material","Class 7","NCERT Solutions","Science"],"articleSection":["NCERT Solutions","Science"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/","url":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/","name":"NCERT solutions for Class 7 Science Light | myCBSEguide","isPartOf":{"@id":"https:\/\/mycbseguide.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage"},"image":{"@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage"},"thumbnailUrl":"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg","datePublished":"2016-05-13T06:19:00+00:00","dateModified":"2018-07-05T07:20:50+00:00","description":"NCERT solutions for Class 7 Science Light in PDF format for free download. NCERT Solutions Class 7 Science.","breadcrumb":{"@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#primaryimage","url":"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg","contentUrl":"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-light\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/mycbseguide.com\/blog\/"},{"@type":"ListItem","position":2,"name":"NCERT Solutions","item":"https:\/\/mycbseguide.com\/blog\/category\/ncert-solutions\/"},{"@type":"ListItem","position":3,"name":"NCERT solutions for Class 7 Science Light"}]},{"@type":"WebSite","@id":"https:\/\/mycbseguide.com\/blog\/#website","url":"https:\/\/mycbseguide.com\/blog\/","name":"myCBSEguide","description":"","publisher":{"@id":"https:\/\/mycbseguide.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/mycbseguide.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/mycbseguide.com\/blog\/#organization","name":"myCBSEguide","url":"https:\/\/mycbseguide.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/mycbseguide.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/mycbseguide.com\/blog\/wp-content\/uploads\/2016\/04\/books_square.png","contentUrl":"https:\/\/mycbseguide.com\/blog\/wp-content\/uploads\/2016\/04\/books_square.png","width":180,"height":180,"caption":"myCBSEguide"},"image":{"@id":"https:\/\/mycbseguide.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/mycbseguide\/","https:\/\/x.com\/mycbseguide","https:\/\/www.linkedin.com\/company\/mycbseguide\/","http:\/\/in.pinterest.com\/mycbseguide\/","https:\/\/www.youtube.com\/channel\/UCxuqSnnygFzwJG0pwogCNEQ"]},{"@type":"Person","@id":"https:\/\/mycbseguide.com\/blog\/#\/schema\/person\/10b8c7820ff29025ab8524da7c025f65","name":"myCBSEguide","sameAs":["http:\/\/mycbseguide.com"]}]}},"_links":{"self":[{"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/posts\/4279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/comments?post=4279"}],"version-history":[{"count":6,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/posts\/4279\/revisions"}],"predecessor-version":[{"id":18087,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/posts\/4279\/revisions\/18087"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/media?parent=4279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/categories?post=4279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mycbseguide.com\/blog\/wp-json\/wp\/v2\/tags?post=4279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}