An object is placed 15 cm from a concave mirror of focal length 10 cm. Find the position, nature and size of the image.

A 5 cm long needle is placed fom a convex mirror of focal length 40 cm. find the position, nature and size of the image of the needle.

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.