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A ray of light passes through an equilat...

A ray of light passes through an equilateral glass prism,such that angle of incidence is equal to the angle of emergence.If the angle of emergence is `3//4` times the angle of prism,calculate the refractive index of the glass prism.

A

45^@`

B

`39^@`

C

`20^@`

D

`30^@`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
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