A light wave has a frequency of 4 times 10^{1 | vedclass

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(A) The speed of light in a vacuum is $c = 3 	imes 10^8 	ext{ m/s}$.The speed of light in the medium $(v)$ is given by the product of frequency $(

Vedclass · Accepted Answer

$1.5$

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(A) The speed of light in a vacuum is $c = 3 	imes 10^8 	ext{ m/s}$.The speed of light in the medium $(v)$ is given by the product of frequency $(
u)$ and wavelength $(\lambda)$: $v = 
u \lambda$.Substituting the given values: $v = (4 	imes 10^{14} 	ext{ Hz}) 	imes (5 	imes 10^{-7} 	ext{ m}) = 20 	imes 10^7 	ext{ m/s} = 2 	imes 10^8 	ext{ m/s}$.The refractive index $(\mu)$ is defined as the ratio of the speed of light in a vacuum to the speed of light in the medium: $\mu = \frac{c}{v}$.$\mu = \frac{3 	imes 10^8 	ext{ m/s}}{2 	imes 10^8 	ext{ m/s}} = 1.5$.

$A$ light wave has a frequency of $4 \times 10^{14} \text{ Hz}$ and a wavelength of $5 \times 10^{-7} \text{ m}$ in a medium. The refractive index of the medium is

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