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A light ray enters a solid glass sphere ...

A light ray enters a solid glass sphere of refractive index `sqrt3` at an angle of incidence `60@`. The ray is both reflected and refracted at the farther surface of the sphere. The angle between the reflected and refracted rays at this surface is

A

`90^@`

B

`60^@`

C

`45^@`

D

`30^@`

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