Question

Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
10 cm
20 cm
30 cm
35 cm​

Answer 1

Answer:

10 cm

Step-by-step explanation:

In concave mirror virtual image is formed in 1 case, when the object is in between focal and pole. So the near answer is 10

Answer 2

Concave Mirror

(a) 10 cm.

As we know that the image formed by concave mirror is both real and virtual, the size of the image formed can be enlarged, same size and diminished, , it can produce inverted and erect both types  of image. These characteristics of image formed by concave mirror is depending on the position of object kept.

In this case the focal length of the mirror is given 15 cm and the image is magnified and virtual . This can only be possible when the position of image is behind the mirror, and the position of object will be between focus and pole.

Hence, the length at which object should be placed should be between 0 and 15 cm. Hence 10 cm is the required answer.