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Physics
The dimensional formula of wave number is
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Q. The dimensional formula of wave number is
Bihar CECE
Bihar CECE 2012
Electromagnetic Waves
A
$ [{{M}^{0}}{{L}^{0}}{{T}^{0}}] $
B
$ [{{M}^{0}}{{L}^{-1}}{{T}^{0}}] $
C
$ [{{M}^{0}}{{L}^{0}}{{T}^{-1}}] $
D
$ [{{M}^{-1}}{{L}^{-1}}{{T}^{0}}] $
Solution:
Wave number $=\frac{1}{\lambda}$
$\therefore $ Dimensions of wave number
$=\left[ M ^{0} L ^{-1} T ^{0}\right]$