Question

An ice cube contains a large air bubble. The cube is floating on the surface of water contained on a trough. What will happen to the water level, when the cube melts?

• A. It will remain unchanged
• B. It will fall
• C. It will rise
• D. First it will and then rise

Answer 1

The correct option is A

It will remain unchanged

$V_o\times {\rho }_w=V_{submerged}\times {\rho }_w$

$\therefore V_{submerged}=V_{cube}$

$\therefore \text{It will remain unchanged.(A)}$