Question

It is desired to photograph the image of an object placed at a distance of 3m from a plane mirror.The camera which is at a distance of 4.5m from the mirror should be focused for a distance of ______m.

Answer 1

1.5 meter because the position of the object is 3 m and of camera is 4.5 m so 4.5 - 3 = 1.5 m