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A prism is made of glass of unknown refr...

A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be `40^(@)`. What is the refractive index of the material of the prism? The refracting angle of the prism is `60^(@)`. If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light

A

Quartz

B

Canada balsam

C

Glass

D

Calcite

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The correct Answer is:
D
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