Define specific heat of body.

Answer

### Step-by-Step Solution:

1. **Understanding Specific Heat**:
- Specific heat is a physical property of a material that indicates how much heat energy is needed to change the temperature of that material.

2. **Definition**:
- The specific heat of a body is defined as the amount of heat required to raise the temperature of 1 gram of the substance by 1 degree Celsius (°C).

3. **Mathematical Representation**:
- The specific heat (c) can be mathematically expressed as:
\[ c = \frac{Q}{m \Delta T} \]
where:
- \( Q \) = heat added or removed (in joules or calories)
- \( m \) = mass of the substance (in grams)
- \( \Delta T \) = change in temperature (in degrees Celsius)

4. **Units**:
- The unit of specific heat is typically expressed in joules per gram per degree Celsius (J/g°C) or calories per gram per degree Celsius (cal/g°C).

5. **Conclusion**:
- In summary, specific heat is a crucial concept in thermodynamics that helps us understand how different materials respond to heat energy.