A point source of light is located 20 cm in front of a convex mirror with f=15 cm. Determine the position and nature of the image point.

An object is placed 12 cm in front of a convex mirror of focal length 18 cm Determine the position and nature of the image.

An object is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position and nature of the image.

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.