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} $ .



NCERT Chapter Video Solution

Dual Pane