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If the refractive index of a medium is V2, what is the cr...

If the refractive index of a medium is V2, what is the critical angle?

A.

45^o

B.

50^o12'

C.

56^o25'

D.

75^o

E.

90^o

View answer & explanation

Correct answer is A

sin C = $\frac{1}{n}$ ; sin C = $\frac{1}{√2}$

C = sin^-1 $\frac{1}{√2}$

= 45^o

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