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

Find two positions of an object, placed in front of a concave mirror of focal length 15cm, so that the image formed is 3 times the size of the object.

Find the position of an object which when placed in front of a concave mirror of focal length 20 cm, produces a virtual image which is twice the size of the object.

Find the position of an object which when placed in front of a concave mirror of focal length 20cm, produces a virtual image, which is twice the size of the object.

An object is placed at the following distances from a concave mirror of focal length 10 cm: (a) 8 cm (b) 15 cm (c) 20 cm (d) 25 cm Which position of the object will produce : ? (i) a diminished real image ? (ii) a magnified real image ? (iii) a magnified virtual image ? (iv) an image of the same size as the object ?

An object is placed at a distance of 40 cm in front of a concave mirror of focal length 20 cm. The image produced is

An object is placed at the distance of 30 cm from a concave mirror of focal length 15 cm. The image will be-

Find the position of an object,which when placed in front of a concave mirror of focal length 20 cm,produces a virtual image,which is twice the size of the object.