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25-09-2021 Electromagnetic Theory

Q. For total internal reflection to occur, which condition must be satisfied?

A. N1 = N2
B. N1 > N2
C. N1 < N2
D. N1 x N2=1


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Dapzoi Verified
Commented on 2021-09-25 11:05:37 (IST)
Answer: B

Explanation: The refractive of the transmitting medium should be greater than that of the receiving medium. In other words, the light must flow from denser to rarer medium, for total internal reflection to occur.