Electromagnetic radiation of frequency n,wave | vedclass

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Question

(B) When light travels from one medium to another,its frequency $(n)$ remains constant because it depends on the source of the light.When light enters

Vedclass · Accepted Answer

$n, \frac{\lambda}{\mu}, \frac{v}{\mu}$

Vedclass · Answer

(B) When light travels from one medium to another,its frequency $(n)$ remains constant because it depends on the source of the light.When light enters a medium with refractive index $\mu > 1$,its velocity $(v')$ decreases and is given by $v' = \frac{v}{\mu}$.Since the relation between velocity,frequency,and wavelength is $v = n\lambda$,and $n$ is constant,the new wavelength $\lambda'$ is given by $\lambda' = \frac{v'}{n} = \frac{v/\mu}{n} = \frac{\lambda}{\mu}$.Therefore,the new frequency,wavelength,and velocity are $n, \frac{\lambda}{\mu}, \frac{v}{\mu}$ respectively.

Electromagnetic radiation of frequency $n$,wavelength $\lambda$,travelling with velocity $v$ in air,enters a glass slab of refractive index $\mu$. The frequency,wavelength,and velocity of light in the glass slab will be respectively:

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