At what distance from a concave mirror of focal length 10 cm should an object be plced so that :
(a) its real image is formed 20 cm from the mirror ?
(b) its virtual image is formed 20 cm form the mirror ?

An object is placed 40 cm from a concave mirror of focal length 20 cm, the image formed is

An object is placed 40 cm from a concave mirror of focal length 20 cm. The image formed is

An object is placed 40 cm from a concave mirror of focal length 20 cm. The image formed is

A plane mirror is placed at a distance of 50 cm from a concave mirror of focal length 16 cm. Where should a short object be placed between the mirrors and facing both the mirrors so that its virtual image in the plane mirror coincides with the real image in concave mirror? What is the ratio of the sizes of the two images?

A plane mirror is placed at a distance of 50 cm from a concave mirror of focal length 16 cm. Where should a short object be placed between the mirrors and facing both the mirrors so that its virtual image in the plane mirror coincides with the real image in concave mirror? What is the ratio of the sizes of the two images?

An object is kept at a distance 20 cm from a convex mirror of focal length 20 cm. The image will form at

An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm. The distance of the image formed is