Thermal Expansion of Solids, Liquids and Gases

A steel metre scale is to be ruled so that the millimetre intervals are accurate to about $5\times 10-5 \mathrm{mm}$ at a certain temperature. The maximum temperature variation allowed during ruling is (the co-efficient of linear expansion of steel $=10\times 10-6 \mathrm{K}-1)$

A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If $L$, $\alpha$ and $Y$ respectively denote the length of the rod, coefficient of linear thermal expansion and Young’s modulus of its material, then for an increase in temperature of the rod by $∆T$, the longitudinal stress developed in the rod is

The physical quantity that determines whether or not a given system $A$ is in thermal equilibrium with another system $B$ is called

Given when a tensile force of $33000 \mathrm{N}$ is applied on a steel rod, there is some change in length. Find the change of temperature required to produce the same elongation, if the steel rod is heated.

(The modulus of elasticity is $3\times {10}^{11} \mathrm{N} {\mathrm{m}}^{-2}$, area of cross-section$={10}^{-3} {\mathrm{m}}^2$ and the coefficient of linear expansion of steel is $1.1\times {10}^{-5} {}^{\circ }\mathrm{C}^{-1}$). $$   $$

Which of the following is not an example of sublimable substances?

Co-efficient of linear, superficial and volumetric expansions are $\mathrm{\alpha }$, $\mathrm{\beta }$ and $\mathrm{\gamma }$ respectively. The volume of $\mathrm{\alpha }:\mathrm{\beta }:\mathrm{\gamma }$ is 

If $\beta$ is the pressure coefficient at constant volume then which of the following is true.

If $\alpha$ is the volume coefficient at constant pressure then which of the following indicates Charles law mathematically.

 The volume thermal expansion coefficient of an ideal gas at constant pressure is

Co-efficient of linear expansion for ionic solid is ${\mathrm{\alpha }}_{\mathrm{i}}$ and for non-ionic solid be ${\mathrm{\alpha }}_{\mathrm{n}}$ then

Co-efficient of linear, superficial and volumetric expansions are $\mathrm{\alpha }$, $\mathrm{\beta }$ and $\mathrm{\gamma }$ respectively. The volume of $\mathrm{\alpha }:\mathrm{\beta }:\mathrm{\gamma }$ is 

Which of the following is not an example of sublimable substances?

The melting point ( K) of aluminium is:-

Ice melts when energy in the form of ____ is supplied

The normal boiling point of a liquid is that temperature at which vapour pressure of the liquid is equal to:

An iron ring of radius $2.1 \mathrm{m}$ is to be fitted on top of the rim of a wheel of radius $2.121 \mathrm{m}$. The coefficient of volume expansion for iron is $3.6\times {10}^{-5}{ \mathrm{K}}^{-1}$. By approximately how much should the temperature of the iron ring be increased so that it fits the rim of the wheel?

If the volume of a block metal changes by$0.12\%$, when it is heated through $20 \mathrm{℃}$, then the coefficient of linear expansion is

An iron plate is uniformly heated from $20°\mathrm{C}$ to $80°\mathrm{C}$. The change in diameter of a circular hole of diameter $1\mathrm{m}$ is $\frac{\mathrm{x}}{100}\mathrm{cm}$. Find the value of $\mathrm{x}$. $\left(\alpha =12\times {10}^{-6}/°\mathrm{C}\right)$

The water pipes burst because the water inside them is expanding when it undergoes _____.

_____is an expansion when a solid is heated and there is a change in its volume.