An isosceles prism of angle 120° has a refractive index of 1.44. Two parallel monochromatic rays enter the prism parallel to each other in air as shown. The rays emerging from the opposite faces
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a
Are parallel to each other
b
Are diverging
c
Make an angle 2 sin-1 (0.72) with each other
d
Make an angle 2 {sin-1 (0.72) - 30°} with each other
answer is D.
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Detailed Solution
At point A,sin300sin r=11.44⇒r=sin−10.72also∠BAD=180o−∠rin rectangle ABCD, ∠A+∠B+∠C+∠D=360o⇒180o−r+60o+180o−r+θ=360o⇒θ=2sin−10.72−30o