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Q.

An object is placed 2f from the pole of a curved mirror of focal length f.

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a

The magnitude of linear magnification is 1 for both types of curved mirror.

b

The magnitude of linear magnification is 1 for a convex mirror.

c

The nature of image will be real for concave mirror.

d

The magnitude of linear magnification is 1 for a concave mirror.

answer is B, D.

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Detailed Solution

For a concave mirror, when object is placed at 2f 
mconcave =ff(2f)=1,So a real image formed is inverted and of same size.
For convex mirror 
mconvex =ff(2f)=13.So a virtual image formed, is erect and diminished.

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