Question

The speed of light in a given medium is 2/3of it’s speed in vacuum.
The absolute refractive index of medium equals to
A:9/4
B:4/9
C:3/2
D:2/3
Please answer

Answer 1

Answer is D. 2/3
speed of light in the given medium=2/3 Speed of light in bacchon
=2/3×3×10^8
=2×10^8 m/s.

So, Absolute refractive index=speed of light in given medium/speed of light in bacchon
=2×10^8/3×10^8
=2/3.

Hope my answer will help you a lot!!!

Answer 2

Answer:

3/2 is answer

Explanation:

I hope my answer is correct