Optics Question 773
Question: The wavelength of sodium light in air is $ 5890{AA} $ . The velocity of light in air is $ 3\times 10^{8}m{{s}^{-1}}. $ The wavelength of light in a glass of refractive index 1.6 would be close to
[DCE 2003]
Options:
A) $ 5890{AA} $
B) $ 3681{AA} $
C) $ 9424{AA} $
D) $ 15078{AA} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ {\lambda _{g}}=\frac{{\lambda _{a}}}{{\mu _{g}}} $
$ =\frac{5890}{1.6}=3681{AA} $ .
