The angle of minimum deviation from a prism is 60°

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

The angle of minimum deviation from a prism is 60°. If the prism angle is 90°, the refractive index of the material of the prism and the angle of incidence required for minimum deviation is: (Given that sin⁡75∘=0.96\sin 75^\circ = 0.96) (a) sin⁡75∘sin⁡45∘,45∘\frac{\sin 75^\circ}{\sin 45^\circ}, 45^\circ (b) sin⁡75∘sin⁡45∘,75∘\frac{\sin 75^\circ}{\sin 45^\circ}, 75^\circ (c) 2sin⁡75∘sin⁡45∘,75∘\sqrt{2} \frac{\sin 75^\circ}{\sin 45^\circ}, 75^\circ (d) 2,75∘\sqrt{2}, 75^\circ

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