Specific heat:
        Specific heat of a substance is the amount of heat required to raise the temperature of 1kg mass of that substance through 1K.
         It has been observed that the quantity of heat $\triangle Q$ required to raise the temperature $ \triangle T$ of a body is proportional to the mass of the body.

Thus,
                    $\triangle Q \alpha m \triangle T$
                     $\triangle Q$ = c m \triangle T$   ……………….. (i)

           Here $ \triangle Q$ is the amount of heat absorbed by the body and c is the constant of proportionality called the specific heat capacity or simply specific heat.

Mathematically,
   c =$\frac{\triangleQ}{(m\triangle T )}$              (ii)

Unit of specific heat:
    SI unit of specific heat is J〖kg〗$^{-1} K^{-1}$.