STATEMENT-1 : Above Curie temperature substance is converted to paramagnetic substance.
and
STATEMENT-2 : As the Curie temperature is reached , the energy associated with thermal motion becomes large enough compared to the interaction energy responsible for the spontaneous alignment of magnetic moments .

Options

A. Statement-1 is True , Statement-2 is True , Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True , Statement-2 is True , Statement-2 is NOT a correct explanation for Statement- 1
C. Statement-1 is True , Statement-2 is False
D. Statement-1 is False , Statement-2 is True

Answer

To solve the question, we need to analyze both statements regarding the Curie temperature and its implications on the magnetic properties of substances.

### Step-by-Step Solution:

1. **Understanding Curie Temperature (Tc)**:
- The Curie temperature is a critical point for ferromagnetic materials. Below this temperature, the material exhibits ferromagnetism due to the alignment of magnetic moments. Above this temperature, the material loses its ferromagnetic properties and becomes paramagnetic.

**Hint**: Remember that the Curie temperature is the threshold where the magnetic behavior of materials changes.

2. **Statement 1 Analysis**:
- Statement 1 claims that "Above Curie temperature, a substance is converted to a paramagnetic substance." This is true because, as the temperature increases past Tc, thermal energy disrupts the alignment of magnetic moments, leading to a paramagnetic state.

**Hint**: Think about how thermal energy affects the alignment of magnetic moments in materials.

3. **Statement 2 Analysis**:
- Statement 2 states that "As the Curie temperature is reached, the energy associated with thermal motion becomes large enough compared to the interaction energy responsible for the spontaneous alignment of magnetic moments." This statement is also true. As temperature increases, thermal energy (kT) increases and eventually surpasses the energy that keeps the magnetic moments aligned, leading to a loss of ferromagnetism.

**Hint**: Consider the balance between thermal energy and interaction energy at the Curie temperature.

4. **Conclusion**:
- Both statements are true. Furthermore, Statement 2 provides a correct explanation for Statement 1, as it describes the mechanism behind the transition from ferromagnetism to paramagnetism at the Curie temperature.

**Hint**: Look for relationships between statements to determine if one explains the other.

### Final Answer:
- **Both Statement 1 and Statement 2 are true, and Statement 2 is the correct explanation for Statement 1.**