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What should be the value of refractive index n of a glass rod placed in air, so that the light entering through the flat surface of rod does not cross the curved surface of rod.

What should be the value of refractive index n of a glass rod placed in air, so that the light entering through the flat surface of rod does not cross the curved surface of rod.

Grade:12

1 Answers

Umakant biswal
5349 Points
7 years ago
@ harsh 
the answer will be 1 . 
REason – total internal reflection should occur in this case . 
and if tir will occur then the light will not emerge through the curved surface . 
and we already knows that the refractive index of air is 1 . 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST ..

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