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    • Posted by Harshit Bhargava 2 years, 4 months ago

    CBSE > Class 12 > Economics
    • 1 answers

    Tarun Kumar 2 years, 4 months ago

    What is moter devlopment

    4Thank You

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    • Posted by Priya Nagar 2 years, 4 months ago

    CBSE > Class 10 > English Language and Literature
    • 2 answers

    Manas Maurya 2 years, 3 months ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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    1Thank You

    Will Rob 2 years, 4 months ago

    Stare

    0Thank You

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    • Posted by Krishna Kant Gaur 2 years, 4 months ago

    CBSE > Class 12 > Painting
    • 0 answers
    ANSWER

    • Posted by Krishna Kant Gaur 2 years, 4 months ago

    CBSE > Class 12 > Painting
    • 0 answers
    ANSWER

    • Posted by Samiksha Soni 2 years, 4 months ago

    CBSE > Class 07 > English
    • 0 answers
    ANSWER

    • Posted by Anju Anju 2 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 3 answers

    Khushi Thakur 2 years, 4 months ago

    Root6+8/4

    0Thank You

    Karan Arya Singh 2 years, 4 months ago

    Thank

    1Thank You

    Abhijeet Kumar 2 years, 4 months ago

    1/√2/2√3+2/1 1/√2/2+2√3 √3/√2(2+2√3) √3/2√2(1+√3)Rationalise the number ----------------------

    3Thank You

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    • Posted by Timmi Sharma 2 years, 4 months ago

    CBSE > Class 09 > हिंदी ए
    • 1 answers

    Anmol 8 Gautam 10 Kumar 2 years, 1 month ago

    Nahi No,never

    1Thank You

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    • Posted by Ananya Saklani 2 years, 4 months ago

    CBSE > Class 07 > हिंदी
    • 1 answers

    Akshat Darak 2 years, 4 months ago

    सेवा में प्रधानाचार्य रोहिणी, रोज़ ब्लासम पब्लिक स्कूल नई दिल्ली दिनांक : 2-2-2021 विषय – पिकनिक पर जाने के लिए अनुमति हेतु प्रधानाचार्य को आवेदन पत्र। महोदय, सविनय निवेदन है कि मैं कक्षा ग्यारहवीं का छात्र हूं। मैं समस्त छात्रों के प्रतिनिधि के रुप में आपसे यह निवेदन करना चाहता हूं कि इस बार हम सभी छात्र नये सत्र की शुरुआत एक मनोरंजक और ज्ञान वर्धक भ्रमण के साथ करना चाहते हैं। पिकनिक के आंनद के साथ पढ़ाई की शुरुआत सुखद रहेगा। अतः आपसे विनम्र निवेदन है कि आप हम सभी छात्रों को पिकनिक पर भेजने की अनुमति प्रदान करें।इस कृपा के लिए हम सभी आपके सदा आभारी रहेंगे। आपका आज्ञाकारी शिष्य मनीष छात्र प्रतिनिधि कक्षा – 4

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    • Posted by Ishan Gautam 2 years, 4 months ago

    CBSE > Class 07 > Sanskrit
    • 2 answers

    Anushka Rath 2 years, 1 month ago

    Kambugrivha

    0Thank You

    Anushka Rath 2 years, 3 months ago

    Kambugrivha 🐢🐢🐢

    0Thank You

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    • Posted by Mayank Singh 2 years, 4 months ago

    CBSE > Class 10 > Social Science
    • 1 answers

    Roshni Roshni 2 years, 4 months ago

    What are the chollenges to the political parties and how to eradicate thon

    0Thank You

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    • Posted by Shyam Yadav 2 years, 4 months ago

    CBSE > Class 10 > Information Technology (402)
    • 0 answers
    ANSWER

    • Posted by Sreeveda Sujith Ak 2 years, 4 months ago

    CBSE > Class 06 > Maths (OLD)
    • 2 answers

    Dayakar Yadav 2 years, 4 months ago

    (-11) + (-12) =

    0Thank You

    Sreeveda Sujith Ak 2 years, 4 months ago

    Please answer

    0Thank You

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    • Posted by Pramod Kumar Mishra 2 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Anju Anju 2 years, 4 months ago

    Please answer

    0Thank You

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    • Posted by Surya Narayanan 2 years, 4 months ago

    CBSE > Class 11 > Biology
    • 1 answers

    Arpita Yadav 2 years, 4 months ago

    The plastids are double-membrane organelles which are found in the cells of plants and algae.

    0Thank You

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    • Posted by Vinu . 2 years, 4 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Krishna Singh 2 years, 4 months ago

    Always we talk g(-)

    0Thank You

    Pooja Kumari 2 years, 3 months ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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    • Posted by Bhumika Sharma 2 years, 4 months ago

    CBSE > Class 03 > Mathematics
    • 5 answers

    Gitashree Rath 1 year, 7 months ago

    Three

    0Thank You

    Crasey Girl Niku And Shes Family 🥰 1 year, 11 months ago

    2

    0Thank You

    Crasey Girl Niku And Shes Family 🥰 1 year, 11 months ago

    3

    0Thank You

    Hradyansh # $En 2 years, 1 month ago

    2 है इसका answer

    0Thank You

    Sweta Devi 2 years, 2 months ago

    2

    1Thank You

    ANSWER

    • Posted by Aditya Singh 2 years, 4 months ago

    CBSE > Class 06 > Computer
    • 1 answers

    Twinkle Luthra 2 years, 3 months ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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    Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

    0Thank You

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    • Posted by Aditya Singh 2 years, 4 months ago

    CBSE > Class 06 > Computer
    • 1 answers

    Seep Sonal Manhas 2 years, 4 months ago

    Ch 3

    1Thank You

    ANSWER

    • Posted by Aditya Singh 2 years, 4 months ago

    CBSE > Class 06 > Computer
    • 0 answers
    ANSWER

    • Posted by Aditya Singh 2 years, 4 months ago

    CBSE > Class 06 > Computer
    • 0 answers
    ANSWER

    • Posted by Manjula Singh 2 years, 4 months ago

    CBSE > Class 03 > English
    • 1 answers

    Aavesh Khan 2 years, 4 months ago

    What excited Rajveer? Why did Pranjal not share his excitement

    0Thank You

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    • Posted by Anmol Sharma 2 years, 4 months ago

    CBSE > Class 07 > Mathematics
    • 1 answers

    Thanvika Reddy Sagili 2 years, 3 months ago

    150000 m square

    1Thank You

    ANSWER
    Question 1: A lens has a refractive index of 1.5 and a radius of curvature of 15 cm for one surface and 20 cm for the other surface. Calculate the difference in curvature between the two surfaces using the lens maker's formula Question 2: A concave lens with a refractive index of 1.4 is required to have a focal length of -12 cm. Determine the radil of curvature for the two lens surfaces using the lens maker's formula. Question 3: A biconvex lens with a refractive index of 1.6 has a known focal length of 25 cm. Calculate the difference in radii of curvature for its two surfaces using the lens maker's formula. Question 4 (Easy): A plano-concave lens has a refractive index of 1.2. The radius of curvature of the curved surface is 18 cm, and the flat side has a radius of curvature of infinity, Calculate the focal length of the lens using the lens maker's formula. Question 5 (Easy): A converging lens has a refractive index of 1.6. The radius of curvature of one surface is 12 om, and the radius of curvature of the other surface is 15 cm. Calculate the focal length of the lens using the lens maker's formula.

    • Posted by Tushar Dulloo 2 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Krish Agrawal 2 years, 3 months ago

    To answer each of your questions, we can use the lens maker's formula, which is given by: \[ \frac{1}{f} = (n - 1) \left( \frac{1}{R_1} - \frac{1}{R_2} \right) \] Where: - \( f \) is the focal length of the lens. - \( n \) is the refractive index of the material. - \( R_1 \) is the radius of curvature of the first surface. - \( R_2 \) is the radius of curvature of the second surface. Let's solve each of your questions: **Question 1:** Given \( n = 1.5 \), \( R_1 = 15 \, \text{cm} \), and \( R_2 = 20 \, \text{cm} \), we need to calculate the difference in curvature between the two surfaces. Using the lens maker's formula, we can calculate the focal length, and then the difference in curvature. 1. Calculate \( \frac{1}{f} \) using the formula with the given values. 2. Once you find \( \frac{1}{f} \), calculate the focal length \( f \) by taking the reciprocal. **Question 2:** Given \( n = 1.4 \) and \( f = -12 \, \text{cm} \), we need to determine the radii of curvature for the two lens surfaces. Using the lens maker's formula, you can calculate \( R_1 \) and \( R_2 \). 1. Rearrange the lens maker's formula to solve for either \( R_1 \) or \( R_2 \). 2. Plug in the known values and solve for \( R_1 \) and \( R_2 \). **Question 3:** Given \( n = 1.6 \) and \( f = 25 \, \text{cm} \), we need to calculate the difference in radii of curvature for its two surfaces. Again, use the lens maker's formula to calculate \( R_1 \) and \( R_2 \). **Question 4:** Given \( n = 1.2 \), \( R_1 = 18 \, \text{cm} \), and \( R_2 = \infty \) for a flat side, calculate the focal length using the lens maker's formula. **Question 5:** Given \( n = 1.6 \), \( R_1 = 12 \, \text{cm} \), and \( R_2 = 15 \, \text{cm} \), calculate the focal length using the lens maker's formula. For each question, perform the calculations as described above, and you will have the answers you need. If you have any specific values to calculate or encounter any issues, feel free to ask for further assistance.

    0Thank You

    ANSWER

    • Posted by Ratan Baidya 2 years, 4 months ago

    CBSE > Class 03 > English
    • 1 answers

    Ratan Baidya 2 years, 4 months ago

    The word theirs refers to?

    2Thank You

    ANSWER

    • Posted by Prathiksha Prathiksha 2 years, 4 months ago

    CBSE > Class 07 > Mathematics
    • 3 answers

    Kanishka Manav 2 years, 3 months ago

    20 twenty

    0Thank You

    Thanvika Reddy Sagili 2 years, 3 months ago

    20

    1Thank You

    Anish Kumar 2 years, 4 months ago

    20

    0Thank You

    ANSWER

    • Posted by Ritupurna Padhy 2 years, 4 months ago

    CBSE > Class 06 > Social (OLD)
    • 0 answers
    ANSWER

    • Posted by Amir Sohail 2 years, 4 months ago

    CBSE > Class 02 > General Knowledge
    • 5 answers

    Shlok Sirsat 2 years ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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    0Thank You

    Shlok Sirsat 2 years ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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    2Thank You

    Anu Priya 2 years, 1 month ago

    Chin china

    2Thank You

    Dipali Anil Bhagwat 2 years, 1 month ago

    China

    2Thank You

    Prabh Kaur 2 years, 3 months ago

    China 🇨🇳

    5Thank You

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    • Posted by Harshit Malik ... 2 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Uday .K 2 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Khushi Thakur 2 years, 4 months ago

    X=7/4 and y=7/6

    0Thank You

    Fardeen Choudhary 2 years, 4 months ago

    4x,+8y+10 =0

    0Thank You

    ANSWER

    • Posted by Harshit Malik ... 2 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 4 answers

    Payal Singhal 2 years, 3 months ago

    Dalton

    1Thank You

    Harshit Malik ... 2 years, 4 months ago

    Thanks 👍 aap sbhi ko

    1Thank You

    Ayushi Patel 2 years, 4 months ago

    Dalton

    1Thank You

    Khushi Chauhan 2 years, 4 months ago

    Dalton

    1Thank You

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