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# Tell me? In total internal reflection when the angle of incidende is equal to the critical angle for the pair of media in contact what will be angle of refraction ?

In total internal reflection when the angle of incidende is equal to the critical angle for the pair of media in contact  what will be angle of refraction ?

• Option 1)

180

• Option 2)

• Option 3)

equal to angle of incidence

• Option 4)

90

Answers (1)
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For internal refection

at $i = \theta _c , r = 90 \degree = angle\: \: of\: \: refraction$

Option 1)

180

Option 2)

Option 3)

equal to angle of incidence

Option 4)

90

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