A convex lens of focal length 0.5 m and concave lens of focal length 1 – McqOptions

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1.	A convex lens of focal length 0.5 m and concave lens of focal length 1 m are combined. The power of the resulting lens will be [CPMT 1999; JIPMER 2000]
A.	1 D
B.	- 1 D
C.	0.5 D
D.	-0.5 D
Answer» B. - 1 D

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