The refractive index of a parallel glass slab is 1.57. A light, from m – McqOptions

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1.	The refractive index of a parallel glass slab is 1.57. A light, from medium Y, is incident on the glass slab. If the angle of incidence is 37 , then the angle of emergence, when the light emerges back to medium Y, is ____
A.	37
B.	45
C.	54
D.	60
Answer» B. 45

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