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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
Write true or false of the following statement.
The moon is self-luminous.
Fill in the blank
A medium through which light cannot pass is called the ....................
Fill in the blank.
Light travels in a ................. path.
List two artificial sources of light.
Is the moon a luminous object?
What do we call a substance through which light passes? Give an example of such a substance.
What do you understand by candle power?
State whether true or false. If false, correct the statement.
If a ray of light passes obliquely from one medium to another, it does not suffer any deviation.
Amount of light entering into the eye is controlled by ______.
What is light?
