A ray of monochromatic light suffers minimum deviation of 38° while passing through a prism of refracting angle 60°. Refractive index of the prism material is take sin⁡49∘=0.7547

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1.5

1.3

0.8

2.4

answer is A.

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Detailed Solution

μ=sin⁡A+δm2sin⁡A2=sin⁡60+382sin⁡602 =sin⁡49∘sin⁡30∘=0.75470.5=1.5

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