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A ray is incident on a glass sphere as s...

A ray is incident on a glass sphere as shown.The opposite surface of the sphere is partially silvered .If the net deviation of the ray transmitted at the partially silvered surface is `1//3^(rd)`of the net deviation suffered by the ray reflected at the partially silvered surface(after emerging out of the sphere).Find the refractive index of the sphere.

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The correct Answer is:
`sqrt(3)`
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