Thermal Expansion of Solids, Liquids and Gases

A hole of diameter $5 \mathrm{cm}$ is drilled in a metal sheet at $30 °\mathrm{C}$. The linear expansion of metal is $2\times {10}^{-5} {\mathrm{K}}^{-1}$. The diameter of the hole when the temperature is raised to $230 °\mathrm{C}$, is equal to

Find the ratio of the length of a steel rod and a copper rod if the steel rod is $4 \mathrm{cm}$ longer than the copper rod at any temperature.
[The coefficient of linear expansion for steel and copper are $1.1\times {10}^{-5} {}^{\circ }\mathrm{C}$ and $1.7\times {10}^{-5} {}^{\circ }\mathrm{C}$ respectively]

A wire is made by attaching two segments together end to end. One segment is made of aluminium and the other is steel. The effective coefficient of linear expansion of the two segment wire is $19\times {10}^{-6} °{\mathrm{C}}^{-1}$. The fraction length of aluminium is $\frac{x}{11}$ then find $x$. (linear coefficients of thermal expansion of aluminium and steel are $23\times {10}^{-6} °{\mathrm{C}}^{-1}$ and $12\times {10}^{-6} °{\mathrm{C}}^{-1}$ respectively)

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

At what temperature does water boil under normal conditions.

What is normal melting point of a substance?

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 

 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 

The _____ melting point, also known as the complete melting point because temperature at given rate becomes completely clear.

The melting point(K) of mercury is 236.

The melting point ( K) of aluminium is:-

What are the common factor which is responsible for increase in melting point? 

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

All liquids boil at higher temperature than their normal boiling point when they contain _____ impurities.

All liquids boil at higher temperature than their normal boiling point when they contain non-volatile impurities.

What is meant by Normal Boiling Point?

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?