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    • Posted by Bhavana Ng 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 3 answers

    Bhavana Ng 5 years, 3 months ago

    No

    0Thank You

    Seenu B 5 years, 3 months ago

    Cu+h2also4---cuso4+h2

    0Thank You

    Palak ? 5 years, 3 months ago

    Hi bhawna are ur unit tests going on

    0Thank You

    ANSWER

    • Posted by Krishna Yadav 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    maddy817 28.12.2018 Physics Secondary School +5 pts Answered when an object is placed at a distance of 50 cm from a concave spherical mirror the magnification produced is minus one by two where should the object be placed to get a magnification of minus 1 by 5? 1 SEE ANSWER ADD ANSWER Log in to add comment maddy817 is waiting for your help. Add your answer and earn points. Answer 4.4/5 180 knjroopa Ace 3K answers 2.6M people helped Given When an object is placed at a distance of 50 cm from a concave spherical mirror the magnification produced is minus one by two where should the object be placed to get a magnification of minus 1 by 5? So we have m = - v / u = - 1 / 2 - v = m x u Given u = 50 cm, m = - 1/2 - v = - 1/2 x 50 v = 50 / 2 or v = 25 cm 1 / f = 1 / u + 1 / v 1 / f = 1 / 50 + 1 / 25 f = 50 / 3 = 16.6 cm Now coming to magnification we have m = - v / u = - 1 / 5 given v / u = 1 / 5 5 v = u v = u / 5 or 1 / v = 5 / u 1 / f = 1 /u + 1 / v 3 / 50 = 1 / u + 5 / u 3 / 50 = 6 / u 3 u = 300 u = 300 / 3 u = 100 cm

    0Thank You

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    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Shubham Saxena ???? 5 years, 3 months ago

    Ok thanks for answering my question.

    0Thank You

    Kritika Pathak 5 years, 3 months ago

    Permanent magnet is a bar magnet it has passes continuously magnet it depends on distance of coil . The strength of per. Magnet can't be changed and electromagnet is magnet which depende on no.of turns of coil, the length gapping of air between its coil, the current flowing in the coil.

    2Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    Please do not answer by Google if you know so you can answer . Without helping from Google. This is Better for yourself for exam . Thank you for answering my question . Welldone

    1Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    The major difference between an electromagnet and permanent magnet is that the former can have a magnetic field when electric current flows through it and disappears when the flow of the current stops. On the other hand, permanent magnets are made up of magnetic material that is magnetized and has its own magnetic field. It will always displays the magnetic behaviour.

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    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question .welldone

    0Thank You

    Yogita Ingle 5 years, 3 months ago

    One side clockwise and one aide anticlockwise. Use right hand thumb rule. U will know the direction of magnetic field. Put ur right thumb in the direction of current. Now observe the direction of fingers it is clockwise or anticlockwise. U will get the direction of the magnetic field

    0Thank You

    Kritika Pathak 5 years, 3 months ago

    It's directly proportional to the current which passes through it

    0Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    The magnetic field lines are concentric circles at every point of a current carrying circular loop.

    0Thank You

    ANSWER

    • Posted by Kanika .... 5 years, 3 months ago

    CBSE > Class 10 > English Language and Literature
    • 0 answers
    ANSWER

    • Posted by Om Prakash 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Kanika .... 5 years, 3 months ago

    Mainly "CFCs "(Chloro fluro Carbon)

    0Thank You

    Shubham Mishra 5 years, 3 months ago

    Cfc (cloroflorocarbon).it is gas not chemical

    0Thank You

    Akhya Sahay 5 years, 3 months ago

    Cfcz

    0Thank You

    Avatar ? 5 years, 3 months ago

    Chlorofluorocarbons (CFCs)

    0Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    The chemicals responsible for ozone layer destruction are: Chlorofluorocarbons: Chlorofluorocarbons (CFCs) are non-toxic, non-flammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. Halogens: Ozone is destroyed by reactions with chlorine, bromine, nitrogen, hydrogen, and oxygen gases. Reactions with these gases typically occur through catalytic processes. Because of catalytic reactions, an individual chlorine atom, on an average, can destroy nearly a thousand ozone molecules, before it is converted into a form harmless to ozone. Hydrofluorocarbons: The HFCs are a class of replacements for CFCs and affect the ozone layer.

    1Thank You

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    • Posted by Ritesh Rotash Sahoo 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Aparna Kumari 5 years, 3 months ago

    It is the layer which protect us from harmful UV rays coming from the sun .

    2Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    The ozone layer absorbs and saves us from ultraviolet Radiation of sun . Thank you.

    1Thank You

    Akhya Sahay 5 years, 3 months ago

    Prevent us from uv rays

    1Thank You

    Avatar ? 5 years, 3 months ago

    The stratospheric ozone layer  absorbs ultraviolet radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms.

    1Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    The stratospheric ozone layer absorbs ultraviolet (UV) radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms. UV rays cannot be seen or felt, but they are very powerful and change the chemical structure of molecules.

    1Thank You

    ANSWER

    • Posted by Govind M 5 years, 3 months ago

    CBSE > Class 10 > Computer Applications (165)
    • 1 answers

    Adesh Kumar 5 years, 3 months ago

    Syntax: if condition : statement(s) Example: Code:(script) a=10 b=20 if a>b: print("a:", a) Output: a: 10

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    ANSWER

    • Posted by Aditya Gupta 5 years, 3 months ago

    CBSE > Class 10 > हिंदी ए
    • 0 answers
    ANSWER

    • Posted by Yana Katkar 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Avatar ? 5 years, 3 months ago

    The primary function of the respiratory system is to take in oxygen and eliminate carbon dioxide . oxygen passes quickly through this air-blood barrier into the blood in the capillaries. ... Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.

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    • Posted by Sminu Saji 5 years, 3 months ago

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

    Aparna Kumari 5 years, 3 months ago

    Wanda didn't say lie about her hundred dresses whenever Peggy used to ask her she was telling about her hundred dresses which she used make that in her drawing competition.

    0Thank You

    Kanika .... 5 years, 3 months ago

    Wanda did not have a hundred dresses because she was poor and wore the same faded dress to school every day The other children of her class used to make fun of her poverty, and would have laughed at her whatever excuse she would have made.

    0Thank You

    Varun Shukla 5 years, 3 months ago

    Because she was mad

    0Thank You

    ANSWER

    • Posted by Simran Badgujar 5 years, 3 months ago

    CBSE > Class 10 > Regional Language
    • 4 answers

    Deepanshu Soni 5 years, 3 months ago

    Punjabi

    4Thank You

    Simran Chauhan 5 years, 3 months ago

    Hoo

    6Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    English

    2Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    Hindi ??

    2Thank You

    ANSWER

    • Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    CBSE > Class 10 > Music
    • 5 answers

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    ok thanx ?

    0Thank You

    Guddy Kirola 5 years, 3 months ago

    Kurta pajama kaala kaala

    1Thank You

    Guddy Kirola 5 years, 3 months ago

    Feelings

    0Thank You

    Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago

    ok thanks for your suggestion??

    0Thank You

    Vicky Raj 5 years, 3 months ago

    Laung laachi

    0Thank You

    ANSWER

    • Posted by Sanika Patil 5 years, 3 months ago

    CBSE > Class 10 > Social Science
    • 1 answers

    Akhya Sahay 5 years, 3 months ago

    Primitive subsistence farming is practiced using Primitive tools like hoe. It is totally dependent on nature for climatic needs like rain and sunlight. . . Intensive subsistence farming is a labor needed farming. It is highly practised. It is dependent on natural methods as well as some modern tools like tractor etc. . . Commercial farming is the type of farming in which only one kind of crop is cultivated on a large scale. Huge modern machines are used in a large amount. Example.. Cotton

    2Thank You

    ANSWER

    • Posted by Smriti Prabha 5 years, 3 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Nitesh Jogi 5 years, 3 months ago

    A+6d=-1 /A+15d=17 A=-1-6d /-1-6d+15d =17 A=-1-6d /-1+9d=17 A=-1-6d /9d=18 ". /d=2 Putting the value of d in a, we get. A=-1-6(2) A=-13 An=a+(n-1)d An=-13 + (n-1) 2 An=-13 +2n-2 An=-15+2n Hence, the nth term of the ap is - -15+2n.

    1Thank You

    Jamna Thakur 5 years, 3 months ago

    Gggdhdhyttg gggdhdhyttg FF FF and joyful

    2Thank You

    ANSWER

    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Shubham Saxena ???? 5 years, 3 months ago

    See after this . You will see my questions.Ok

    1Thank You

    Akhya Sahay 5 years, 3 months ago

    But where is the question?..

    0Thank You

    ANSWER

    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering akhya.

    2Thank You

    Akhya Sahay 5 years, 3 months ago

    Work done per unit time is called electrical energy. Its si unit is joule.

    1Thank You

    Priyanshi Patel 5 years, 3 months ago

    Good

    2Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    Ok thanks for answering. Welldone......

    2Thank You

    Anjali Dhanraj 5 years, 3 months ago

    It is defined as the product of power and time.si unit is kWh

    3Thank You

    ANSWER

    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Avatar ? 5 years, 3 months ago

    3.6 ×10^6 joule

    0Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question.

    0Thank You

    Akhya Sahay 5 years, 3 months ago

    3.6×10^6

    0Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question ..........

    1Thank You

    Anjali Dhanraj 5 years, 3 months ago

    3.6×10⁶ joule

    2Thank You

    ANSWER

    • Posted by Shivam Singh Bhadouriya 5 years, 3 months ago

    CBSE > Class 10 > सामाजिक विज्ञान
    • 0 answers
    ANSWER
    2

    • Posted by Deepak Jangid 5 years, 3 months ago

    CBSE > Class 10 > हिंदी ए
    • 1 answers

    Sanjeev Kumar 5 years, 3 months ago

    2

    0Thank You

    ANSWER

    • Posted by Meenakshi Somanchi 5 years, 3 months ago

    CBSE > Class 10 > हिंदी ब
    • 0 answers
    ANSWER

    • Posted by Mandakini Singh 5 years, 3 months ago

    CBSE > Class 10 > Computer Applications (165)
    • 1 answers

    Meghna Thapar 5 years, 3 months ago

    Online reservation systems reduce workloads for your staff and optimize customer service. These platforms can make sure that bookings are synced and the availability is updated with each booking processing. A good hotel reservation system makes the work process carefree. One of the main benefits of online booking systems is that they allow customers to place their booking at a time that is most convenient for them. Using an online booking system, they can make their booking at any time of day or night, without having to worry if it's within business hours or not.

    2Thank You

    ANSWER

    • Posted by Gayatri Singh 5 years, 3 months ago

    CBSE > Class 10 > Painting
    • 2 answers

    Gayatri Singh 5 years, 3 months ago

    Can any one send me??

    6Thank You

    Aditya Upmanyu 5 years, 3 months ago

    ???????

    3Thank You

    ANSWER

    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 3 answers

    Kritika Pathak 5 years, 3 months ago

    The energy in which movement of electrons from one place to another is called electrical energy. It's SI unit is Joule.

    0Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    Answer my all questions if you know.

    0Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    I said that I have recently asked questions answer my question not this question , you wrote . Ok

    0Thank You

    ANSWER

    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question .

    0Thank You

    ANSWER

    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Avatar ? 5 years, 3 months ago

    It is a point on the principal axis at which the rays of light parallel to the principal axis meet after reflection or seem to come from. for a concave mirror the focus lies in front of the mirror .

    0Thank You

    Himanshu Panwar 5 years, 3 months ago

    On yyii Huuuy. Yyui

    0Thank You

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question. Nice but do not send the answers copied by Google . If you know this answer so you can send answer . Ok

    2Thank You

    Yogita Ingle 5 years, 3 months ago

    Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.
     

    Characteristics of image obtained by a concave mirror
    There are five cases through which one can understand the characteristics of image obtained by a concave mirror and they are as follows:

    Object placement Image obtained Image characteristics
    When the object is placed at infinity Image obtained is at the focal point Image is a point
    When the object is moved from infinity to center of curvature Image move from focal point to center of curvature The size of the image is increased, real, and inverted
    When the object is at center of curvature Image obtained is at center of curvature The size of the image remains the same, real, and inverted
    When the object move from center of curvature to focal point Image move from center of curvature to infinity The size of the image is bigger than the object, real, and inverted
    When the object is at focal point Image is at infinity Infinitely big
    When the object move from the focal point to mirror Image move from minus infinity to mirror The size of the image decreases, larger than the object, virtual, and upright

    1Thank You

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    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question . Welldone

    1Thank You

    Yogita Ingle 5 years, 3 months ago

    Alkali metals are  Lithium, Sodium Potassium etc..
    They are in the first group after Hydrogen gas.
    Second Alkali metal is Sodium.
    Its electronic configuration is :  1s²  2s² 2p⁶  3s¹

    0Thank You

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    • Posted by Shubham Saxena ???? 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 3 answers

    Shubham Saxena ???? 5 years, 3 months ago

    Thank you for answering my question. Welldone

    1Thank You

    Meenakshi Somanchi 5 years, 3 months ago

    Methanal (HCHO) is from the aldehyde group.

    1Thank You

    Yogita Ingle 5 years, 3 months ago

    The functional group is aldehydic group.(CHO)

    1Thank You

    ANSWER

    • Posted by Keerthika Dhanam 5 years, 3 months ago

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

    Khushi Saini 5 years, 3 months ago

    Faith in God ...is the main theme of the chapter

    0Thank You

    Ishika Bains 5 years, 3 months ago

    Main Theme of the story is about faith.

    0Thank You

    ANSWER

    • Posted by Subasree Dhanasekaran 5 years, 3 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Yogita Ingle 5 years, 3 months ago

    Let the other 2 sides be x, y
    Length of hypotenuse = 50 cm
    Total length =112cm
    x + y +50 =112
    x + y =112 - 50
    x + y = 62
    By pythagorous theorem
    x² + y² = 50²
    x² + y² = 2500
    (x + y)² - 2xy = 2500
    -2xy = 2500 - 3844
    = - 1344
    xy = 1344/2
    = 672
    Area of triangle = 1/2xy
    = 1/2*672
    = 336
    Therefore, area of the triangle = 336cm²

    2Thank You

    ANSWER

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