Wave Mechanics Question 848

Question: If wavelength of a wave is $ \lambda =6000{AA}. $ Then wave number will be

[MH CET 2002]

Options:

A) $ 166\times 10^{3} $ m?1

B) $ 16.6\times {{10}^{-1}} $ m?1

C) $ 1.66\times 10^{6} $ m?1

D) $ 1.66\times 10^{7} $ m?1

Show Answer

Answer:

Correct Answer: C

Solution:

$ \bar{n}=\frac{1}{\lambda }=\frac{1}{6000\times {{10}^{-10}}} $

$ =1.66\times 10^{6}{{m}^{-1}} $