If light travels a distance x in time t1

Asked by admin @ 12/08/2021 in Physics viewed by 310 People

If light travels a distance x in time t1 sec in air and 10x distance in time t2 in a certain medium, then find the critical angle of the medium???

Answered by admin @ 12/08/2021

$your \: answer \:$

Explaination :

Let velocity in second medium be V2 and that in air be V1.

Then,

V1 = x / t1 and V2 = 10x / t2.

Now n(refractive index of medium) = v2/v1

or n = 10t1/t2

Let critical angle be ic.

Sin ic = 1/n or Sin ic = t2/10t1

or ic = Sin inverse (t2/10t1)

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