Question

What do you understand by the following statements :

(i) The heat capacity of water is 60JK^-1. 

(ii) The specific heat capacity of lead is 130Jkg^-1K^-1

Answer 1

 (i) Heat capacity is the amount of heat required to raise the temperature of a body by 1°C or 1K. Thus, 60JK^-1 of energy is required to raise the temperature of the given body by 1K. 

(ii) Specific heat capacity is the amount of heat energy required to raise the temperature of unit mass of a substance through 1°C or IK. Thus, 130JKg^-1K^-1 of heat energy required to raise the temperature of unit mass of lead through 1K.