Q. A convex spherical mirror with a radius of curvature of 14.5 cm produces a virtual image one half the size of the real object. Where is the object?
Q. A man and a boy carry a canoe 5.90 m long and weighing 379 N. The canoe is held overhead in a horizontal position. The boy holds one end of the canoe. How far from the opposite end should the man stand so that the boy exerts a force of only 124 N?