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/The indices of refraction of crown glass of red and blue lights are 1.51 and 1.49, respectively, and those of?

glass and stone are 1.77 and 1.73 respectively. An isosceles prism angle is 6degree crown glass. A beam of white light strikes a small angle of this prism. The other stone isosceles glass prism combines with the glass prism as the crown that no deviation from the incident light. Determine the angle of the prism of rock crystal. Calculate net dispersion of the combined system.

n = 9N (a) + N (R)] = (1.77 + 1.73) / 2 = 1.75 / 2 = (1.51 + 1.49) / 2 = 1.5 N 'A' = [- (N-1) A] / (N'-1) = [- (1.5 – 1) 6] / (1.75 – 1) = – 4 ° of Spread = (n '(o) – (R)) A '- (n (b) – N (R)) A = 0.04 °

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