A lens of focal power 0.5 D is [JIPMER 1999] – McqOptions

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1.	A lens of focal power 0.5 D is [JIPMER 1999]
A.	A convex lens of focal length 0.5 m
B.	A concave lens of focal length 0.5 m
C.	A convex lens of focal length 2 m
D.	A concave lens of focal length 2 m
Answer» D. A concave lens of focal length 2 m

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