Two rods of the same material but different lengths expand by the same amount when heated equally. Which rod had the smaller initial length?

The temperature of a substance increases by ${27^0}C$. On the Kelvin scale this increase is equal to

A steel bridge is built with expansion joints because:

Two thermometers $A$ and $B$ are exposed in sun light. The valve of is pointed black, but that of $B$ is not pointed. The correct statement regarding this case is

A metal rod of length $L$ at temperature $T_1$ is heated to a temperature $T_2$. If the linear expansivity of the metal is $\alpha$, the increase in length of the rod is given by:

Substance having very small coefficient of linear expansion, among the following is

A hollow sphere and a solid sphere of the same material and radius are heated to the same temperature. Which sphere will expand more in volume?

A clock with a brass pendulum keep correct time at ${20^0}C$ but loses 8.212 s per day when the temperature rises to ${30^0}C$. The coefficient of linear expansion of brass is?

Density of a substance at ${0^0}C$ is 10.6 gm/c.c and at ${100^0}C$ is 10 gm/c.c. Coefficient of linear expansion of solid is

On a new scale of temperature (which is linear) and called the scale, the freezing and boiling points of water are ${39^{\rm{o}}}W$ and ${239^{\rm{o}}}W$ respectively. What will be the temperature on the new scale, corresponding to a temperature of ${39^{\rm{o}}}C$ on the Celsius scale

The length of a metal rod at ${0^0}C$ is $0.5\,m$. When it is heated, its length increases by $2.7\,mm$. The final temperature of rod is $\left[ {\alpha = 90 imes {{10}^{ - 61}}^0C} \right]$