Specific Heat

"The amount of heat required to raise the temperature of unit mass of a substance by 1 unit is known as specific heat of a substance."

➡When two bodies at different temperatures are brought in contact with each other, the heat energy flows from body of high temperature to the body of low temperature till the temperature becomes equal.

The factors upon which the quantity of heat depends are:

➡The quantity of heat depends on the mass of a body.

Q ∝ m 

➡Quantity of heat depends on change in temperature of body.

Q ∝ (T2 - T1)

➡Quantity of heat depends on the nature of material.

Q ∝ m.(T2 - T1)

Q = m. C. (T2 - T1)

➡Here heat absorbed or give out is equals to mass X specific heat X change in 

temperature.

C = Q/ (T2 - T1)

➡Here C is called the specific heat of the body which depends on the nature of 

material of body.

➡Among all substances, water has the highest specific heat capacity.