Light enters from air to glass having refract | vedclass

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Question

(D) The refractive index $(n)$ of a medium is defined as the ratio of the speed of light in a vacuum $(c)$ to the speed of light in that medium $(v)$:

Vedclass · Accepted Answer

$2 	imes 10^8 \, m \, s^{-1}$

Vedclass · Answer

(D) The refractive index $(n)$ of a medium is defined as the ratio of the speed of light in a vacuum $(c)$ to the speed of light in that medium $(v)$:$n = \frac{c}{v}$Given:Speed of light in vacuum $(c)$ = $3 	imes 10^8 \, m \, s^{-1}$Refractive index of glass $(n)$ = $1.50$Rearranging the formula to find the speed of light in glass $(v)$:$v = \frac{c}{n}$$v = \frac{3 	imes 10^8 \, m \, s^{-1}}{1.50}$$v = 2 	imes 10^8 \, m \, s^{-1}$Therefore,the speed of light in glass is $2 	imes 10^8 \, m \, s^{-1}$.

Material medium	Refractive index
Air	$1.0003$
Ice	$1.31$
Water	$1.33$
Alcohol	$1.36$
Kerosene	$1.44$
Fused quartz	$1.46$
Turpentine oil	$1.47$
Benzene	$1.50$
Crown glass	$1.52$
Canada Balsam	$1.53$
Rock salt	$1.54$
Carbon disulphide	$1.63$
Dense flint glass	$1.65$
Ruby	$1.71$
Sapphire	$1.77$
Diamond	$2.42$

Light enters from air to glass having refractive index $1.50$. What is the speed of light in the glass? The speed of light in vacuum is $3 \times 10^8 \, m \, s^{-1}$.

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