Question

the image of an object formed by a mirror is real inverted and of magnification -1 if the image is at the distance of 40 cm from the mirror where is object placed?

Answer 1

· Say, the object is at distance of infinity from the lens so a real image is formed at a distance of f on the other side of lens. As the object approaches lens , coming upto a distance of 2f, the image will move away from the lens. It will be real, inverted and smaller in size than than the object