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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.
Light travels in a straight-line path.
Select the correct alternative.
The luminous body is
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
Answer the following.
What is light?
Answer the following.
Name some sources of light that are not hot.
________ objects allow all the light to pass through them.
When a beam of white light passes through a prism it gets ______.
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.
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image?
