The speed of light in a medium of refractive | vedclass

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Question

(A) The refractive index $n$ of a medium is defined as the ratio of the speed of light in vacuum $c$ to the speed of light in the medium $v$.The formu

Vedclass · Accepted Answer

$2.4 	imes 10^{8} \,m \,s^{-1}$

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(A) The refractive index $n$ of a medium is defined as the ratio of the speed of light in vacuum $c$ to the speed of light in the medium $v$.The formula is given by $n = \frac{c}{v}$.Rearranging the formula to solve for $v$,we get $v = \frac{c}{n}$.Given $c = 3 	imes 10^{8} \,m \,s^{-1}$ and $n = 1.25$.Substituting the values: $v = \frac{3 	imes 10^{8}}{1.25} = 2.4 	imes 10^{8} \,m \,s^{-1}$.Therefore,the correct option is $A$.

The speed of light in a medium of refractive index $1.25$ is . . . . . . .
(Speed of light in vacuum is $3 \times 10^{8} \,m \,s^{-1}$)

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The speed of light in a medium of refractive index $1.25$ is . . . . . . .(Speed of light in vacuum is $3 \times 10^{8} \,m \,s^{-1}$)