Four students P, Q, R and S traced the path of a ray of light passing through a rectangular glass slab for an angle of incidence of 45° and measured the corresponding angle of emergence. The values of angle of emergence obtained by them were 42°, 46°, 48°, 55° respectively. The experiment was correctly performed by (A) P and Q (B) Q and R (C) only S (D) only Q

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Answers

2016-03-01T20:37:48+05:30
The refractive index Is not given
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