A virtual, erect and magnified image of an object is to be produced with a concave mirror of focal length $12 c m$ . Which of the following object distance should be chosen for this purpose?

10 c m

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14 c m

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18 c m

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24 c m

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Solution

The correct option is A $10 c m$
The object must be kept at a distance of $10 c m$ from the concave mirror in order to produce a virtual, erect, and magnified image. The reason being, a concave mirror forms a virtual, erect, and magnified image if the object is placed at a distance less than the focal length i.e. between the focus and the pole.

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A virtual, erect and magnified image of an object is to be produced with a concave mirror of focal length 12cm. Which of the following object distance should be chosen for this purpose?

A virtual, erect and magnified image of an object is to be produced with a concave mirror of focal length $12 c m$ . Which of the following object distance should be chosen for this purpose?