A) \[n>\sqrt{2}\]
B) n = 1
C) n = 1.1
D) n = 1.3
Correct Answer: A
Solution :
Key Idea: The first idea is that for no refraction at its lateral face, angle of incidence should be greater than critical angle. Let a light ray enters at A and refracted beam is AB. At the lateral face, the angle of incidence is \[\theta \]. For no refraction at this face, \[\theta >C\] \[\sin \theta >\sin \,C\]You need to login to perform this action.
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