JEE PHYSICS MCQ: RAY OPTICS

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What will be the colour of sky as seen from the earth, if there were no atmosphere

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Correct option: A

Black

Option A (Black) is correct because the sky appears blue due to scattering of light by the atmosphere. Without an atmosphere, there would be no scattering, and the sky would appear black.

More Questions from RAY OPTICS

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In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium A double convex lens is made of glass which has its refractive index 1,45 for violet rays and 1.50 for red rays. If the focal length for violet ray is

20 \mathrm{~cm}

, the focal length for red ray will be Which light rays undergoes two internal reflection inside a raindrop, which of the rainbow is formed? A piece of plane glass is placed on a word with letters of different colours. The letters which appear minimum raised are A dentist has a small mirror of focal length

16 {~mm}

. He views the cavity in the tooth of a patient by holding the mirror at a distance of

8 {~mm}

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