Question

A ray of light enters at grazing angle of incidence into an assembly of three isosceles right-angled prisms having refractive indices and  . If finally emergent light ray also emerges at grazing angle then calculate x :

75322
expand
A

5

B

3

C

2

D

1

Hard
Updated on : 2022-09-05
Solution
verified
Verified by Toppr
Correct option is B)

Apply Snell's law on various surfaces one by one :

1 sin sin sin  

We have the incident angle for the second interface given using the relation sin=cos
Thus we get

cos = sin sin = (cos=)

cos sin sin

cos =

sin + cos


Thus we get

Video Explanation
image
play-icon
Solve any question of Ray Optics and Optical Instrument with:-
Was this answer helpful?
upvote 0
downvote0