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An achromatic convergent doublet of two lenses in contact has power +2 D the convex lens has a power +5D the ratio of dispersive powers of the convergent and divergent lensesA) 2 : 5B) 5 : 3C) 5 : 2D) 3 : 5 |
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Answer» An achromatic convergent doublet of two lenses in contact has power +2 D the convex lens has a power +5D the ratio of dispersive powers of the convergent and divergent lenses A) 2 : 5 B) 5 : 3 C) 5 : 2 D) 3 : 5 |
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