" How mave mirror of focal length "20cm" .The image produced is "

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 a distance 20 cm from the pole of a convex mirror of focal length 20 cm. The image is produced at

An object is placed at a distance 20 cm from the pole of a convex mirror of focal length 20 cm. The image is produced at

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 in front of a concave mirror of focal length 20 cm . The image formed is three times the size of the onject. Calculate focal length of the mirror and the position of the image.

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