A thin prism P 1 with an angle 6° and made of glass of refractive index 1.54 is combined with another prism P 2 made from glass of refractive index 1.72 to produce dispersion without average deviation. The angle of prism P 2 is :
Text Solution
Verified by ExpertsThe correct answer is:
D
[for no average deviation]
6°(1.54-1)=A(1.72-1)
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