A virtual- erect and magnified image of an object is to be produced with a concave mirror of focal length 12 cm- Which of the following object distance should be chosen for this purpose - i 10 cm ii 15 cm iii 20 cm Give reasons for your choice-

Answer: Option(a) Explanation: 10 cm, because if the object is placed between the pole and focus of the concave mirror only then the image formed is virtual, er ...

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Standard X

Physics

Mirror Formula and Magnification

A virtual, er...

Question

A virtual, erect, and magnified image of an object is to be produced with a concave mirror of a focal length of 12 cm. Which of the following object distance should be chosen for this purpose?
(i) 10 cm
(ii) 15 cm
(iii) 20 cm

Give reasons for your choice.

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Solution

Answer: Option (a) 10 cm
Explanation:
We know that if the object is placed between the pole and the focus of the concave mirror then the image formed is virtual, erect, and magnified.
So the object is placed at a distance less than the focal length (less than 12). And only 10 in options is less than 12. So the answer is 10.

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A virtual, erect, and magnified image of an object is to be produced with a concave mirror of a focal length of 12 cm. Which of the following object distance should be chosen for this purpose? (i) 10 cm (ii) 15 cm (iii) 20 cm Give reasons for your choice.

A virtual, erect, and magnified image of an object is to be produced with a concave mirror of a focal length of 12 cm. Which of the following object distance should be chosen for this purpose?
(i) 10 cm
(ii) 15 cm
(iii) 20 cm

Give reasons for your choice.