Light is incident normally on face AB of a prism as shown in figure. A liquid of refractive index μ is placed on face AC of the prism. The prism is made of glass of refractive index 3/2. The limits of μ for which total internal reflection takes place on face AC is -
A
μ > 
B
μ < 
C
μ > 
D
μ < 
Text Solution
Verified by ExpertsThe correct answer is:
B
Critical angle between glass & liquid face is
sin θ c = 
= 
for T/R to take place i > θ c
sin 60 0 > 
⇒ μ < 
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