# Three prisms 1, 2 and 3 have the prism angle A = 60^(@), but their refractive indices are respectively 1.4, 1.5 and 1.6. If delta_(1), delta_(2), d

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Three prisms 1, 2 and 3 have the prism angle A = 60^(@), but their refractive indices are respectively 1.4, 1.5 and 1.6. If delta_(1), delta_(2), delta_(3) be their respective angles of deviation then
A. delta_3gtdelta_2gtdelta_1
B. delta_1gtdelta_2gtdelta_3
C. delta_1=delta_2=delta_3
D. delta_2gtdelta_1gtdelta_3

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deltaprop(mu-1)`