Optics Question 942

Question: The curve of angle of incidence versus angle of deviation shown has been plotted of prism. The value of refractive index of the prism used is:

Options:

A) 3

B) 2

C) 32

D) 23

Show Answer

Answer:

Correct Answer: A

Solution:

[a] δ=i+eA δmin=60o when i=e

60o=2iA=2(60o)A

A=60o μ=sin(A+δmin2)sin(A2)=sin(60+602)sin(602)=3



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