7. The prism angle and refractive index for a prism are 60" and root 2
respectively. The angle of minimum deviation will be
(A) 15
(B) 30
(C) 45°
(D) 60"
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Explanation:
(uo-1)A=d
where,uo= refractive index
A =angle if prisom
d=angle of deviation
root 2 value =1.414
A=60°
(1.414-1)60=d
0.414×60=d
d=24.84
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