JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Understanding +4 | -1

Statement-I: Different colours of light have same velocity in vacuum, but they have different velocities in in any other transparent medium.

Statement-II:

\nu=c / \mu

, where symbols have standard meanings. For different colours, refractive index,

\mu

of transparent medium has different values. Therefore,

v

is different.

View answer and explanation

Correct option: A

If both Statement-I and Statement-II are true

Option A is correct because both statements are true and Statement-II correctly explains Statement-I. The refractive index depends on color, thus affecting velocity in a medium.

More Questions from RAY OPTICS

Practice All Chapter MCQs →

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}

from the cavity. The magnification is All of the following statements are correct except