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प्रश्न
Can light travel in vacuum ?
उत्तर
Yes, light can travels in vacuum or air, a distance of nearly 299, 792, 458 metre (or nearly 3 x 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.
We can see an object through an opaque medium.
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Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
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Answer the following.
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