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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
Fill in the blank.
A medium which allows light to pass through it easily is called the ...................
Tick the correct answer.
Light is a font of
Answer the following.
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Light is a form of ______.
When a beam of white light passes through a prism it gets ______.
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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.
Light is a form of energy and it travels in a straight line.
Observe the picture given in the following figure carefully.
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