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

An object is placed at 20 cm from a convex mirror of focal length 10 cm. The image formed by the mirror 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 object. Calculate two possible distances of the object from the mirror.

If an object is placed 10 cm in front of a concave mirror of focal length 20 cm, the image will be.

An object is kept in front of a concave mirror of focal length 20 cm. The image formed is three times the size of the object. Calculate the possible distance of the object from the mirror for a real image b. virtual image

If an object is placed at 10 cm infront of a concave mirror of focal length 15 cm. The magnification of image is

An object is placed 25 cm from a convex lens whose focal length is 10 cm . The image distance is ___________ cm.

An object is placed 40 cm from a convex lens of focal length 30 cm. If a concave lens of focal length 50 cm is introduced between the convex lens and the image formed such that it is 20 cm from the convex lens, find the change in the position of the image.