For a real object, magnification produced by a mirror is $+ 2.5$ . Choose the correct statements regarding the mirror.

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Mirror cannot be a plane mirror

Mirror can be a concave or a convex mirror

Mirror must be concave mirror, with object between pole and focus .

Mirror must be a convex mirrror

answer is C, D.

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Detailed Solution

For a real object , image produced by a convex mirror is always vitual and diminished .

magnification produced by a plane mirror is 1.

For a concave mirror , $\frac{1}{v} + \frac{1}{(- u)} = \frac{1}{(- f)} \Rightarrow v = \frac{u f}{f - u} \Rightarrow m = \frac{f}{f - u}$

Evidently for u $< f,$ m is positive and greater than 1.

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