At what distance from a convex lens of focal length 30 cm, an object s – McqOptions

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1.	At what distance from a convex lens of focal length 30 cm, an object should be placed so that the size of the image be 1/2 of the object [J&K CET 2004]
A.	30 cm
B.	60 cm
C.	15 cm
D.	90 cm
Answer» E.

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