Thermal Expansion of Solids, Liquids and Gases

A bimetallic strip of lead and nickel has a total thickness of $8\mathrm{cm}$ ($4\mathrm{cm}$ each). The strip is straight at a temperature of $300\mathrm{K}$. The coefficient of linear expansion of lead is $29\times {10}^{-6}{ \mathrm{K}}^{-1}$ and that of nickel is $16\times {10}^{-6}{ \mathrm{K}}^{-1}$. If the strip is heated to $400\mathrm{K}$, then the radius of curvature of the strip is close to

A metal rod of cross-sectional area ${10}^{-4}{ \mathrm{m}}^2$ is hanging in a chamber kept at $20°\mathrm{C}$ with a weight attached to its free end. The coefficient of thermal expansion of the rod is$2.5\times {10}^{-6}{ \mathrm{K}}^{-1}$ and its Young's modulus is $4\times {10}^{12} \mathrm{N}·{\mathrm{m}}^{-2}$. The weight attached to the rod is increased by $5000 \mathrm{N}$ but the temperature of the chamber is lowered so that the length of the wire is unchanged. Then, the temperature of the chamber is

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

Two metal rods made of steel and copper have coefficients of linear expansion $1.1\times {10}^{-5}{ \mathrm{K}}^{-1}$ and $1.7\times {10}^{-5}{ \mathrm{K}}^{-1}$ respectively. At room temperature $(300 \mathrm{K})$, the steel rod is $4 \mathrm{cm}$ longer than the copper rod. If the difference in their lengths remains same at all temperatures, then the lengths of the steel and copper rods respectively (at $300 \mathrm{K}$ ) are

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 $1.1\times {10}^{-5} {}^{\circ }\mathrm{C}^{-1}$). $$   $$

At what temperature does water boil under normal conditions.

What is normal melting point of a substance?

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, 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?