V.K. Sally Solutions for Chapter: Light - Reflection and Refraction, Exercise 3: Practice Problem : 1

An object $3 \mathrm{cm}$ high produces a real image $4.5 \mathrm{cm}$ high, when placed at a distance of $20 \mathrm{cm}$ from a concave mirror. Calculate the position of the image.

An object $3 \mathrm{cm}$ high produces a real image $4.5 \mathrm{cm}$ high, when placed at a distance of $20 \mathrm{cm}$ from a concave mirror. Calculate the focal length of the mirror.