If water absorbs 4000 joule heat to increase the temperature of 1 kg water through 1°C then the specific heat capacity of water is :

4 Jg^-1°C^-1

Reason — Specific heat capacity is the amount of heat energy required to raise the temperature of a substance per unit of mass. 4000 J heat is required to raise the temperature of 1 kg of water through 1°C i.e., 4000 J heat is required to raise the temperature of 1000 g of water through 1°C i.e., 4 J heat is required to raise the temperature of 1 g of water through 1°C. So, specific heat capacity of water is 4J g^-1°C^-1.