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प्रश्न
Tick the correct answer.
The natural source of light is
विकल्प
Sun
Electric lamp
Candle flame
Kerosene lamp
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उत्तर
Sun
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संबंधित प्रश्न
Fill in the blank.
The sun is a ............... source of light.
How does light make an object visible?
Write the names of some transparent objects.
Tick the correct answer.
Light causes
Write true or false
The stars have no light.
Light is a form of ______.
Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.
Write about two everyday situations that tell you that light travels in a straight line.
a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is:
- at C
- between C and F
- between F and P of the mirror.
b) Mention the position and nature of image in each case.
Look at the figure given in the following figure.
Will there be any difference in the shadow formed on the screen in A and B.
