Solution:- As the rays From the sun are parallel to the principal Axis, they form the image at the focus. Thus, the focal length of the mirror is 12 cm. The radius of curvature you will be twice the focal length that is 24 cm.
Q. An object is placed at a distance of 20 cm from a convex mirror of focal length 25 cm. Calculate the position of the image. Discuss is nature.
