When the distance of an object from a concave mirror is decreased from `15 cm` to 9 cm, the image gets magnified `3` times than that in first case. Calculate focal length of the mirror.

An object is placed at a distance of 10 cm from a concave mirror. When the distance of object from the mirror is decreased to 6 cm, the image gets 2 times magnified than that in first case. Calculate the focal length of the mirror.

If an object is 30 cm away from a concave mirror of focal length 15 cm the image will be

What is the distance of an object from a concave mirror of focal length 20 cm so that the size of the real image is three times the size of the object ?

An object is placed in front of a concave mirror at a distance of 7.5 cm from it. If the real image is formed at a distance of 30 cm from the mirror, find the focal length of the mirror. What would be the focal length if the image is virtual.

The radius of curvature of concave mirror is 24 cm and the image is magnified by 1.5 times. The object distance is

An object is held in front of conacve mirror of focal length 15 cm . The image formed is 3 times the size of the object. Calculate two possible distances of the object from the mirror.