A, B and C are three optical media of respective critical angles C1, C2, and C3. Total internal reflection of light can occur from A to B and also from B to C but not from C to A. Then the correct relation between critical angles is
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a
C1 > C2 > C3
b
C1 = C2 = C3
c
C3 > C1 > C2
d
C1 < C2 < C3
answer is D.
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Detailed Solution
As total internal reflection takes place from A to BsimilarlyBut as total internal reflection cant take place from C to AμC<μA ---3From (1) and (2) and (3) sin c=1μ so