When an object is kept at a distance of 30cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of `9cm s^(-1)` the speed with which the image moves is

When an object is kept at a distance of 30cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of 9m s^(-1) the speed with which the image moves is

When an object is kept at a distance of 30cm from a concave mirror, the image is formed at a distance of 10 cm. if the object is moved with a speed of 9 cm/s, find the speed (in cm/s) with which image moves.

An object is placed at a distance of 30 cm from a concave mirror and its real image is formed at a distance of 30 cm from the mirror. The focal length of the mirror is

An object is placed at a distance of 30 cm from a concave mirror and its real image is formed at a distance of 30 cm from the mirror. The focal length of the mirror is

If the object is placed at a distance of 10 cm from a plane mirror, then the image distance is ______ .

An object is placed at a distance of 25 cm from a concave mirror and a real image a formed by the mirror at a distance of 37.5 cm. If the object is moved 15 cm towards the mirror the image distance will be

The image of an object at a distance of 40 cm from a convex mirror is formed at a distance of 10 cm from the mirror . If the object begins to move towards the mirror with a velocity of 8 cm * s^(-1) what will be the velocity of the image?