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प्रश्न
Write true or false of the following statement.
The moon is self-luminous.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Match the following columns
| Column A | Column B |
| a. Wooden block | i. new moon's day |
| b. Sun | ii. rectilinear propagation of light |
| c. Umbra | iii. opaque body |
| d. Eclipse | iv. luminous body |
| e. Solar eclipse | v. complete dark park |
Name two natural sources of light.
Can a transparent medium form an image? Explain your answer.
Tick the correct answer.
Light is a font of
Tick the correct answer.
A tube light is a
Answer the following.
Write down five man-made sources of light.
When a ______ object comes in the way of light, light passes ______ it.
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.
Boojho made light from a laser torch fall on a prism. Will he be able to observe a band of seven colours? Explain with a reason.
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.
