Optics Question 748

Question: The refractive index of water is 1.33. What will be the speed of light in water

[CBSE PMT 1996; KCET 1998]

Options:

A) $ 3\times 10^{8} $ $ m/s $

B) $ 2.25\times 10^{8} $ $ m/s $

C) $ 4\times 10^{8} $ $ m/s $

D) $ 1.33\times 10^{8} $ m/s

Show Answer

Answer:

Correct Answer: B

Solution:

$ v=\frac{c}{\mu }=\frac{3\times 10^{8}}{1.33}=2.25\times 10^{8} $ m/s



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