A liquid with coefficient of volume expansion $\gamma$ is filled in a container of a material having the coefficient of linear expansion $\alpha$. If the liquid overflows on heating

If coefficient of cubical expansion of liquid γ is more  than the cubical expansion of the metal of container then liquid expands more than vessel. Then liquid will overflow. so the  cubical expansion $\gamma$ of liquid will be greater than 3α. The correct Option is γ > 3α.