An object kept at 20 cm from a spherical mirror gives rise to an image 15 cm behind the mirror. The focal length of the mirror is:
An object 20 cm from a spherical mirror gives rise to a virtual image 15 cm behind the mirror. Determine the magnification of the image and the type of mirror used.
An object 20 cm from a convex mirror gives rise to a virtual image 15 cm behind the mirror. The focal length of the mirror is
An object is kept behind a concave mirror of focal length 20cm.the image is three times the object size. Calculate two possible distances of the object from the mirror.