The frequency of a light ray having a wavelen | vedclass

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Question

(B) The relationship between frequency $(
u)$,speed of light $(c)$,and wavelength $(\lambda)$ is given by the formula: $
u = \frac{c}{\lambda}$.Give

Vedclass · Accepted Answer

$10^{15} \ 	ext{cycles/sec}$

Vedclass · Answer

(B) The relationship between frequency $(
u)$,speed of light $(c)$,and wavelength $(\lambda)$ is given by the formula: $
u = \frac{c}{\lambda}$.Given:Speed of light,$c = 3 	imes 10^8 \ 	ext{m/s}$.Wavelength,$\lambda = 3000 \ \mathring A = 3000 	imes 10^{-10} \ 	ext{m} = 3 	imes 10^{-7} \ 	ext{m}$.Substituting the values into the formula:$
u = \frac{3 	imes 10^8}{3 	imes 10^{-7}} = 10^{15} \ 	ext{Hz}$ (or $	ext{cycles/sec}$).Therefore,the correct option is $B$.

The frequency of a light ray having a wavelength of $3000 \ \mathring A$ is

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