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Question

An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. On the other side of the lens, at what distance from the lens must a convex mirror of radius of curvature 9 cm can be placed in order to have an upright image of the object coincident with it?9 cm20 cm11 cm10 cm

A
11 cm
B
10 cm
C
20 cm
D
9 cm
Solution
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Option C is correct

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