Calculate the image distance for an object of height $12 \mathrm{mm}$ at a distance of $0.20 \mathrm{m}$ from a concave lens of focal length $0.30 \mathrm{m}$, and state the nature and size of the image.

A small object is placed $150 \mathrm{mm}$ away from a diverging lens of focal length $100 \mathrm{mm}$.

Copy the figure below and draw rays to show how an image is formed by the lens.

A small object is placed $150 \mathrm{mm}$ away from a diverging lens of focal length $100 \mathrm{mm}$.

Calculate the distance of the image from the lens by using the lens formula.