Question
Write a short note.
Specific heat capacity

Answer

1. The amount of heat energy required to raise the temperature of a unit mass of an object by $1^{\circ} C$ is called the specific heat or specific heat capacity of that object.
2. SI unit of specific heat capacity is $J / kg { }^{\circ} C$ and CGS unit is $cal / g { }^{\circ} C$
3. It is denoted by ' $c$ ' and given by formula: $c=\frac{Q}{m \Delta T}$
4. Specific heat is a property of a substance and is different for different substances.
5. Higher the value of specific heat capacity of the substance, higher is the amount of heat energy required to raise its temperature by $1^{\circ} C$.
6. The specific heat capacity of object is measured using principle of heat exchange.

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