If light travels a distance x in time t1
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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???
Asked by admin @ in Physics viewed by 316 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 @
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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