Answer:
Per unit mass
Step-by-step explanation:
When some heat energy "Q" is given to an object of mass "m" to raise its temperature by "ΔT", then the energy is given as
Q = m c ΔT
where c = specific heat of the object
rearranging the above equation
c = Q/(m ΔT)
for "1 °C" rise of temperature , ΔT = 1
So specific heat is defined as amount of heat required to raise the temperature by 1 °C per unit mass of the object.