Light travels through a glass plate of thickness t

Asked by admin @ 11/08/2021 in Physics viewed by 267 People

Light travels through a glass plate of thickness t and having refractive index n. If c is the velocity of light in vacuum, the time taken by the light to travel this thickness of glass is

(a)
(b) tnc
(c)
(d)

Answered by admin @ 11/08/2021

Speed =distance /time

Distance =refractive index×thickness

C=n×t/time

So ,t=n×t/c

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