Question

Four students A,B,C,D were asked to take three sets of observations for tracing the the path of a ray of light through a glass slab. The choice of different angles of incidence made by them were-
A(10°,15°,20°) B(15°,20°,25°) C(30°,45°,60°) D(70°,75°,80°) The student who would likely to get best result is? please answer fast.

Answer 1

student C would likely get the best results

Answer 2

The student C is the one who would likely to get best result.
Because the angle of incidence and angle of emergence are parallel to each other hence the sum of the 1st & 3rd angle of incidence should be equal to 90°
and 30+60 = 90°
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