NDA General Science Physics Questions Part 1

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Question : 42 of 100

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A ray of light when refracted suffers change in velocity. In this context, which one among the following statements is correct ?

[NDA I 2015]

Velocity increases as the ray passes from a rarer to a denser medium
Velocity decreases as the ray passes from a denser to a rarer medium
Velocity decreases as the ray passes from a rarer to a denser medium
Change of velocity does not depend on the nature of medium

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