Question

Which of the following statements is correct regarding the propagation of light of different colours of white light in air?
(a) Red light moves fastest
(b) Blue light moves faster than green light
(c) All the colours of the white light move with the same speed
(d) Yellow light moves with the mean speed as that of the red and
the violet light​

Answer 1

Explanation:

Option C is correct

All colours of white light moves with the same speed

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Answer 2

Regarding the propagation of light of different colors of white light in air All the colors of the white light move with the same speed.

• Light of all colors, including the different colors of white light, travels at the same speed in a vacuum. In air, all colors of light still travel at very close to the same speed, but the speed can be slightly different due to refraction or bending of light due to the difference in the index of refraction of air for different wavelengths of light.

• So, in air, all the colors of the white light move with essentially the same speed, and the differences in speed between the different colors are negligible.

To know more about  speed visit :

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