Coefficient of linear expansion of a vessel completely filled with $Hg$ is $1 \times 10^{-5} /{ }^{\circ} C$. If there is no overflow of $Hg$ on heating the vessel, then coefficient of cubical expansion of $Hg$ is ......
$4 \times 10^{-5} /^{\circ} C$
$>3 \times 10^{-5} /{ }^{\circ} C$
$\leq 3 \times 10^{-5} /{ }^{\circ} C$
Data is insufficient
Surface of the lake is at $2°C$. Find the temperature of the bottom of the lake........ $^oC$
Give temperature $^oC$, $^oF$ and $K$ when density of water is maximum.
Two metal strips that constitute a thermostat must necessarily differ in their
The coefficient of linear expansion depends on
A metal rod of Young's modulus $Y$ and coefficient of thermal expansion $\alpha$ is held at its two ends such that its length remains invariant. If its temperature is raised by $t^{\circ} C$, the linear stress developed in it is