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Question: Answered & Verified by Expert
A light movs from denser to rarer medium, which of the following is correct?
PhysicsRay OpticsJIPMERJIPMER 2011
Options:
  • A Energy increases
  • B Frequency increases
  • C Phase changes by $90^{\circ}$
  • D Velocity increases
Solution:
1075 Upvotes Verified Answer
The correct answer is: Velocity increases
When a ray of light moves from one medium to other, its velocity changes. This change depends on refractive index of the medium.
Light travels from denser to rarer medium, $i e$, from medium of higher refractive index to lower refractive index. So, in second (rarer) medium, its velocity increases.

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