In an experiment for determination of refractive index of glass of a prism by
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Problem
In an experiment for determination of refractive index of glass of a prism by i−δ , plot it was found that a ray incident at angle 35∘ , suffers a deviation of 40∘ and that it emerges at angle 79∘ . In that case which of the following is closest to the maximum possible value of the refractive index? [Main 2016]
(1) 1.7
(2) 1.8
(3) 1.5
(4) 1.6