Homework Answers
since the light is emitted from shere having radius R1 hence this radius remains as it is
the velocity of light i vaccum=c -m/s
but in any medium having refractive index n,the velocity is =c/n -m/s
that is velocity get decrease by 1/n times of vaccum
time taken to cover R2 distance, t=R2/(c/n) seconds
observing from far away the equivalent distance for the observer should be = R1+t*C=R1+nR2
hence equivalent distance =R1+nR2
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A
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currents I distributed evenly across their cross sections.
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