A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find (a) the focal length of mirror (b) position of image.

A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find (a) the focal length of the mirror (b) position of the image.

The image formed by a convex mirror is of size one-third the size of object. How are u and v related?

The erect image formed by a concave mirror is of size double the size of object. How are u and v related?