The power of an achromatic convergent lens of two lenses is + 2D. The – McqOptions

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1.	The power of an achromatic convergent lens of two lenses is + 2D. The power of convex lens is + 5D. The ratio of dispersive power of convex and concave lens will be [Pb. PET 2003]
A.	5 : 3
B.	3 : 5
C.	2 : 5
D.	5 : 2
Answer» C. 2 : 5

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