Question

the refractive index of three media P,Q,R are 1.73, 1.33,2.24 respectively . Arrange these media in increasing order of their optical density​

Answer 1

Answer:

=> We know that, Optical density is directly proportional to refractive index.

In ascending order :-

C B A D

Ans-(b) since the light ray has not refracted.

Refractive index of medium 1 and medium 2 is same.

Answer 2

$\huge{\mathtt{\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}\blue{!}}}$

Speed of light ,v=

$\frac{c}{μ}$

where c=speed of light in vacuum

and μ = refractive index of medium

Hence, for maximum speed, μ should be minimum.

Hence, speed of light will be maximum in P having minimum μ.

Answer-(A).