Question

. The coefficient of cubical expansion of a solid is the increase in volume per unit original volume at 0(C per degree rise in
(a) pressure (b) volume (c) temperature (d) areas​

Answer 1

To find:

Value of coefficient of cubical expansion.

Solution:

Lets assume that an object with initial volume V, coefficient of cubical expansion $\gamma$, and change in temperature be ∆T.

So, the change in volume is given as :

$\therefore \: \Delta V = V \times \gamma \times \Delta T$

$\implies \: \gamma = \dfrac{\Delta V}{ V\Delta T}$

$\boxed{ \implies \: \gamma = \dfrac{change \: in \: volume}{ initial \: volume \times Temperature \: change} }$

So, the coefficient of cubical expansion can be expressed as the change in in volume per unit original volume with per degree change in temperature.