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Question
Two parallel rays of Red and Violet travelling through the air, meet the air-glass boundary as shown in the above figure. Will their paths inside the glass be parallel? Give a reason for your answer.
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Solution
No.
Reason: Deviation suffered by each ray will be different because the refractive index is different for different colours of light.
RELATED QUESTIONS
A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence (∠i). He then measures the corresponding values of the angle of refraction (∠r) and the angle of emergence (∠e) for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be
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(C) ∠i < ∠r < ∠e
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