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Question: Answered & Verified by Expert
Let ${ }^{\prime} \mu_{1}{ }^{\prime}$ and ${ }^{\prime} \mu_{2}{ }^{\prime}$ be the refractive indices of two media. ' $\mathrm{v}_{1}{ }^{\prime}$ and ' $\mathrm{v}_{2}$ ' are the
velocities of light in the media respectively.
Which one of the following relations is TRUE?
PhysicsRay OpticsMHT CETMHT CET 2020 (15 Oct Shift 1)
Options:
  • A $\mu_{1} \mathrm{v}_{1}=\mu_{2} \mathrm{v}_{2}$
  • B $\mu_{2} \mathrm{v}_{1}=\mu_{1} \mathrm{v}_{2}$
  • C $\mu_{1} \mathrm{v}_{1}^{2}=\mu_{2} \mathrm{v}_{2}^{2}$
  • D $\mu_{2}^{2} \mathrm{v}_{1}=\mu_{1}^{2} \mathrm{v}_{2}$
Solution:
2676 Upvotes Verified Answer
The correct answer is: $\mu_{1} \mathrm{v}_{1}=\mu_{2} \mathrm{v}_{2}$
$\mu_{1}=\frac{c}{v_{1}} \quad \mu_{2}=\frac{c}{v_{2}}$
$\therefore \quad \mu_{1} v_{1}=\mu_{2} v_{2}$

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