Optics Question 708

Question: Light of different colours propagates through air

Options:

A) With the velocity of air

B) With different velocities

C) With the velocity of sound

D) Having the equal velocities

Show Answer

Answer:

Correct Answer: D

Solution:

In vacuum, the speed of light is independent of wave length. Thus vacuum (or air) is a non dispersive medium in which all colours travel with the same speed.



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