The frequency of a wave of light is 12 times | vedclass

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Question

(D) Given: Frequency $
u = 12 	imes 10^{14} \ s^{-1}$ and velocity of light $c = 3 	imes 10^{10} \ cm \ s^{-1}$.The wave number $\overline{
u}$ is

Vedclass · Accepted Answer

$4 	imes 10^{4} \ cm^{-1}$

Vedclass · Answer

(D) Given: Frequency $
u = 12 	imes 10^{14} \ s^{-1}$ and velocity of light $c = 3 	imes 10^{10} \ cm \ s^{-1}$.The wave number $\overline{
u}$ is defined as the reciprocal of wavelength $\lambda$,where $\lambda = \frac{c}{
u}$.Therefore,$\overline{
u} = \frac{1}{\lambda} = \frac{
u}{c}$.Substituting the values: $\overline{
u} = \frac{12 	imes 10^{14} \ s^{-1}}{3 	imes 10^{10} \ cm \ s^{-1}} = 4 	imes 10^{4} \ cm^{-1}$.

The frequency of a wave of light is $12 \times 10^{14} \ s^{-1}$. The wave number associated with this light is

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