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Question

An object is placed 40 cm infront of a concave mirror of focal length 20 cm. The image formed is

A
real, inverted and of same size
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B
real, inverted and smaller in size
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C
virtual, erect and larger in size
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D
virtual, erect and smaller in size
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Solution

The correct option is A real, inverted and of same size
Given f=20 cm for concave mirror
R=2f=40 cm
Since radius of curvature is 40 cm, and object is placed there. Hence object is at centre of curvature C.

Image formed will be at C, real, inverted and of same size as that of object.

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