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JIPMER 2004
Exam
JIPMER
Year
2004
Subject
Physics
Chapter
Ray Optics

JIPMER 2004 · Physics · Ray Optics

A this glass prism (μ=1.5) in the position of minimum deviation...

A this glass prism (μ=1.5)(\mu=1.5) in the position of minimum deviation deviates the monochromatic light ray by 10∘10^{\circ}, the refracting angle of prism is

Options

  1. A20∘20^{\circ}
  2. B10∘10^{\circ}
  3. C30∘30^{\circ}
  4. D45∘45^{\circ}

Correct answer

A. 20∘20^{\circ}

Step-by-step solution

Given : δm=10∘,μ=1.5\delta_m=10^{\circ}, \mu=1.5 For a thin prism of minimum deviation δm=(μ−1)A\delta_m=(\mu-1) \mathrm{A} 10∘=(1.5−1)A10^{\circ}=(1.5-1) \mathrm{A} or A=100.5=20∘A=\frac{10}{0.5}=20^{\circ}
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