Two objects $A$ and $B$ are placed at 15 cm and 25 cm from the pole in front of a concave mirror hav

Question

Two objects $A$ and $B$ are placed at 15 cm and 25 cm from the pole in front of a concave mirror having radius of curvature 40 cm . The distance between images formed by the mirror is

Professor PC Thomas Classes · Answer

Using mirror formula $1/v + 1/u = 1/f$ for both positions to find image distances and taking difference.