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 the rod does not cross the curved surface of the rod

Question

Harsh · Answer

This is same as optical fibre. As the light enters, it should not escape even in the extreme case. So lets take i=90

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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 the rod does not cross the curved surface of the 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 the rod does not cross the curved surface of the rod

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