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CBSE Class 10 Answered

what is principle of reversibility ?
Asked by | 05 Mar, 2012, 03:32: PM
Expert Answer

The principle of reversibility states that light will follow exactly the same path if its direction of travel is reversed.

Hence:

 

Using snell 's law :
Sin i/ Sin r = 1n2
and for Second image Sin r/ Sin i = 2n1
 
So ,  1n2  = 1/ 2n1
Answered by | 05 Mar, 2012, 03:59: PM
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