Sunil Batra Solutions for Chapter: Reflection and Refraction, Exercise 2: Practice Exercise 4B

Draw the ray diagrams for an object placed at different positions in front of a convex mirror.

Write the uses of concave mirror.

The focus of a concave mirror is virtual and that of a convex mirror is real.

An object $10 \mathrm{cm}$ long is placed at $15 \mathrm{cm}$ away from a convex mirror of focal length $10 \mathrm{cm}$. Find the position and size of image.

An object is kept in front of a concave mirror of focal length $15 \mathrm{cm}$. The image formed is three times the size of the object. Calculate the two possible distances of the object from the image.

How far should an object be from a concave mirror of radius $0.36 \mathrm{m}$ to form a real image $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$9$}\right.$th of its size?

A needle $1 \mathrm{cm}$ high is placed at a distance of $0.1 \mathrm{m}$ from a convex mirror of focal length $0.05 \mathrm{m}$. Determine the position and size of the image.

Find the focal length of a convex spherical mirror which produces an image $\frac{1}{6}$th the size of an object located $0.12 \mathrm{m}$ from the mirror?