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प्रश्न
Can light travel in vacuum?
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उत्तर
Yes, light can travels in vacuum or air, a distance of nearly 299, 792, 458 metre (or nearly 3 × 108 metre) in one second. Thus, the speed of light in vacuum (or air) is 3 x 108 m s’1 nearly.
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संबंधित प्रश्न
Name a few living things which emit light.
What do you understand by candle power?
Fill in the blank
Speed of light in vacuum is .................
Answer the following.
Write down five man-made sources of light.
A ______ is a natural source of light.
When light passes through a prism, it gets separated into ______ colours.
When a beam of white light passes through a prism it gets ______.
If VB, VG, VR be the velocity of blue, green, and red light respectively in a glass prism, then which of the following statement gives the correct relation?
The path of the light is called as ______.
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.
