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Samira Joshi
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Asked: 2021-12-01T11:05:05+00:00 In:

A Student carries out the experiment of tracing the path of a ray of light through a rectangular glass slab for two different values of angle of incidence ∠i = 30° and ∠i = 45°. In the two cases the student is likely to observe the set of values of angle of refraction and angle of emergence as:

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Poll Results

7.13%[A] ∠r = 30°, ∠e = 20° and ∠r = 45°, ∠e = 28° ( 64 voters )
27.54%[B] ∠r = 30°, ∠e = 30° and ∠r = 45°, ∠e = 45° ( 247 voters )
60.87%[C] ∠r = 20°, ∠e = 30° and ∠r = 28°, ∠e = 45° ( 546 voters )
4.46%[D] ∠r = 20°, ∠e = 20° and ∠r = 28°, ∠e = 28° ( 40 voters )
Based On 897 Votes

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The angle of refraction must be less than the angle of incidence. While angle of emergence is equal to angle of incidence.

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    2 Answers

    1. [C] ∠r = 20°, ∠e = 30° and ∠r = 28°, ∠e = 45°

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    2. Opt (c) r = 20, e = 30; r = 28, e = 45

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