The distance between an object and its doubly magnified image by a concave mirror is: [Assume `f`= focal length]

If the distance between object and its two times magnified virtual image produced by a curved mirror is 15 cm, the focal length of the mirror must be :

If the distance between the virtual image from Its real object is 60 cm in case of a concave mirror . The focal length of the concave mirror If the image formed is 3 times magnified image is

If the distance between the virtual image from Its real object is 60 cm in case of a concave mirror . The focal length of the concave mirror If the image formed is 3 times magnified image is

Which position of the object will produce a magnified virtual image,if a concave mirror of focal length 15cm is being used?

The distance of real object when a concave mirror produces a real image of magnification ‘m’ is (f is focal length)

The distances of the real image of an object and the object, from the focus of a concave mirror are respetively b and a. Find the focal length of the concave mirror in terms of a and b.