Q.

A right angled prism is made up of a material of refractive index  μ. It is desired that a light ray incident normally on PQ emerges parallel to the incident direction after suffering two total internal reflection. In which of the following condition is this possible?

Question Image

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

μ=1.3

b

never possible

c

μ=2/3

d

μ=2

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Question Image

As total internal reflection is taking place at both of the surfaces PR and RQ

θcθ and θc90θθc450sinθc121μ12μ2

or Critical angle shall be less than 45o.

Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon