Optics Question 712

Question: The index of refraction of diamond is 2.0, velocity of light in diamond in cm/second is approximately

[CPMT 1975; MNR 1987; UPSEAT 2000]

Options:

A) $ 6\times 10^{10} $

B) $ 3.0\times 10^{10} $

C) $ 2\times 10^{10} $

D) $ 1.5\times 10^{10} $

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Answer:

Correct Answer: D

Solution:

$ v=\frac{c}{\mu }=\frac{3\times 10^{8}}{2}=1.5\times 10^{8}m/s=1.5\times 10^{10}cm/s $



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