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2016-01-23T16:34:31+05:30

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Total Internal reflection is the process in which a light ray GOING FROM DENSER MEDIUM TO RARER MEDIUM is reflected 100% back into the same medium when Incident angle is more than critical angle.
Note:-critical angle is that angle of incidence for which the angle of refraction is 90 degrees.
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thnz alves....
not a problem....glad to help!