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Question

Total internal reflection can take place only if

A

light goes from optically raer medium (smaller refractive index) to optically denser medium

B

light goes from optically denser medium to rarer medium

C

the refractive indices of the two media are close to different

D

the refractive indices of the two media are widely different

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Solution

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Correct option is B)

Total internal reflection can take place only if

(1) Light goes from optically denser medium to rarer medium

(2) Angle of incidence is greater than the critical angle

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