Questions
A thin prism having refracting angle 10° is made glass of refractive index 1.42. This prism is combined with another thin prism of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be :
detailed solution
Correct option is C
When d = d1 + d2 = 0,μ-1A+μ'-1A'=0(1.42 -1)10 = (1.7-1)A' ⇒4.2 = (0.7) A' ⇒A' = 6o.Talk to our academic expert!
Similar Questions
Two prisms A and B have dispersive powers of 0.012 and 0.018 respectively. The two prisms are in contact with each other. The prism ‘A’ produces a mean deviation of , the mean deviation produced by ‘B’ if the combination is achromatic is
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