Physics · Oct / Nov 2023 · Paper 12 · Question 4

A student finds that the mass of a rock is 65 g. She pours 30 cm$^3$ of water into a measuring cylinder. She places the rock in the water so that the water covers the rock completely. The water level rises to 55 cm$^3$. What is the density of the rock?

1. A0.38 g / cm$^3$
2. B1.2 g / cm$^3$
3. C2.2 g / cm$^3$
4. D2.6 g / cm$^3$

As printed in the paper