A thin prism having refracting angle 10° is made of 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 [2017]
(a) 6° (b) 8°
(c) 10° (d) 4°
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Answer:
the correct option is a
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