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
