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Question: Answered & Verified by Expert
A this glass prism $(\mu=1.5)$ in the position of minimum deviation deviates the monochromatic light ray by $10^{\circ}$, the refracting angle of prism is
PhysicsRay OpticsJIPMERJIPMER 2004
Options:
  • A $20^{\circ}$
  • B $10^{\circ}$
  • C $30^{\circ}$
  • D $45^{\circ}$
Solution:
1067 Upvotes Verified Answer
The correct answer is: $20^{\circ}$
Given : $\delta_m=10^{\circ}, \mu=1.5$
For a thin prism of minimum deviation
$\delta_m=(\mu-1) \mathrm{A}$
$10^{\circ}=(1.5-1) \mathrm{A}$ or $A=\frac{10}{0.5}=20^{\circ}$

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