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.
