A thin prism P1 with angle 30 is made of glass of refractive index 1.52 is combined with another prism P2 made of glass of refractive index 1.65 to produce direct vision combination. The angle of prism P2 is
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a
40
b
2.80
c
3.80
d
2.40
answer is D.
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Detailed Solution
(4)For direct vision combination (dispersion without deviation),δ1 = δ2⇒ A1μ1−1 = A2μ2−1⇒ A2 = 30 × 1.52−11.65−1=2.40
A thin prism P1 with angle 30 is made of glass of refractive index 1.52 is combined with another prism P2 made of glass of refractive index 1.65 to produce direct vision combination. The angle of prism P2 is