μa,μb, μc are refractive indices of the media A, B, C respectively, so that μa>μb> μc. The critical angle arises when a ray of light travels from
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a
C to A
b
C to B
c
B to A
d
A to C
answer is D.
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Detailed Solution
total internal reflection arises when a light ray travel from denser to rarer medium only ie from A to B (or) from A to CA is densestB is denserC is rarer