A convex lens of focal length 25 cm and a concave lens of focal length – McqOptions

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1.	A convex lens of focal length 25 cm and a concave lens of focal length 10 cm are joined together. The power of the combination will be [MP PMT 2001]
A.	? 16 D
B.	+ 16 D
C.	? 6 D
D.	+ 6 D
Answer» D. + 6 D

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