A concave mirror of radius of curvature 50 cm is used to form an image of an object kept at a distance of 25 cm from the mirror on its principal axis. What will be the position of the image from the mirror?
The focal length f of the mirror is 25 cm (half the radius of curvature). For an object at this distance, the image also forms at 50 cm due to the mirror equation 1/f = 1/v + 1/u.