Question
Question: Light of different colours propagates through air...
Light of different colours propagates through air
A
With the velocity of air
B
With different velocities
C
With the velocity of sound
D
Having the equal velocities
Answer
Having the equal velocities
Explanation
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.