UGC-NET | UGC NET CS 2016 July – II | Question 30
Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ________ the critical angle.
(A) equal to
(B) less than
(C) greater than
(D) less than or equal to
Answer: (C)
Explanation: Optical fiber uses reflection to guide light through a channel, in which angle of incidence is greater than the critical angle.
So, option (C) is correct.
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