Optics Question 745
Question: The speed of light in air is $ 3\times 10^{8}m/s $ . What will be its speed in diamond whose refractive index is 2.4
[KCET 1993]
Options:
A) $ 3\times 10^{8} $
$ m/s $
B) 332 $ m/s $
C) $ 1.25\times 10^{8} $ m/s
D) $ 7.2\times 10^{8} $
$ m/s $
Show Answer
Answer:
Correct Answer: C
Solution:
$ v=\frac{c}{\mu }=\frac{3\times 10^{8}}{2.4}=1.25\times 10^{8}m/s $
