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In an experiment for determination of re...

In an experiment for determination of refractive index of glass of a prism by `i-delta`, plot it was found thata ray incident at angle `35^circ`, suffers a deviation of `40^circ` and that it emerges at angle `79^circ`. In that case which of the following is closest to the maximum possible value of the refractive index?

A

1.6

B

1.7

C

1.8

D

1.5

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The correct Answer is:
D
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