Optics Question 446

Question: A ray of light is incident on a glass sphere of refractive index 3/2. What should be the angle of incidence so that the ray which enters the sphere does not come out of the sphere?

Options:

A) ten1(2/3)

B) 600

C) 900

D) 300

Show Answer

Answer:

Correct Answer: C

Solution:

[c] ABO=OAB=θc

sinθc=1μ=23

Applying snell’s law at A sinisinθC=32

sini=(32)(23)=1 Or i=90



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