A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm. Give the location of the image and the magnification. Describe what happens as the needle is mooved farther from the mirror.

An object is placed 8 cm away in front of a concave mirror of focal length 5 cm. Find out the position of image and magnification. Find out whether the image is inverted or erect by drawing the ray diagram on a graph paper.

An object is placed in front of concave mirror 20 cm away from it. If its focal length is 40 cm , locate the position of image and its nature.