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Question

A crown glass prism with refracting angle 6 , is to be achromatised for red and blue light with a flint glass prism. Angle of the flint glass prism should be
(Given Crown glass μr= 1.513, μr=1.523 , Flint glass μr= 1.645,μb= 1.665 )

  1. 1.5
  2. 3
  3. 2.4
  4. 4.5

A
2.4
B
1.5
C
3
D
4.5
Solution
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Q1
A crown glasss prism eith refracting angle 6degreesis to be achromatised for red and blue light with a flint glass prism.Angle of the flint glass prism should be (given crown glass Ur=1.513,Ub=1.523 Flint glass Ur=1.645, Ub=1.665)
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Q2
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