Question

Absolute refractive index of medium A is 1.3 while that of medium B is 2.4.In which of

these medium light propagate with lower speed? Give reason.​

Answer 1

Answer:

The speed of light will be low in medium B.

speed of light in given medium= (speed of light in vacuum) / (refractive index )

so from the equation, we can say that as refractive index increases speed of light decreases in that medium decreases.

Answer 2

Answer:

Refractive index

refractive index of a medium is defined as the ratio of speed of light in vaccum to the speed if light in air

refractive index = C/V.

where c = speed of light in air

v = speed of light in vaccum

hence we can conclude that,

more the refractive index means decreasing the speed if light

so,

I medium B which has refractive index of 2.4

light will propagate with lower speed

I hope this answer will help you

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