Assertion. Delectric polaristion means formation of positive and negative charges inside the dielectric.
Reason. Free electrons are formed in this process.

Options

A. both, Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. both, Assertion and Reason are true, but Reason is not the correct explanation of the Asserrtion.
C. Assertion is true, but the Reason is false.
D. both, Assertion and Reason are false.

Explanation

To solve the question, we need to analyze the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding Dielectric Polarization**:
- Dielectric polarization occurs when a dielectric material is placed in an external electric field. The electric field causes the charge distribution within the dielectric to become uneven.

**Hint**: Recall how electric fields influence charge distributions in materials.

2. **Formation of Positive and Negative Charges**:
- When the dielectric is subjected to an electric field, the electrons within the material experience a force. This force causes the electrons to move slightly in the direction opposite to the electric field, leading to a separation of charge. This results in the formation of a negative charge on one side and a positive charge on the other side of the dielectric.

**Hint**: Think about how the movement of charges creates regions of positive and negative charge.

3. **Role of Free Electrons**:
- The reason states that free electrons are formed during this process. However, this is incorrect. The polarization does not create new free electrons; instead, it redistributes the existing electrons within the dielectric material. No external electrons are added; the existing electrons simply move in response to the electric field.

**Hint**: Consider the difference between creating new charges and redistributing existing charges.

4. **Evaluating the Assertion and Reason**:
- The assertion is true: Dielectric polarization indeed involves the formation of positive and negative charges inside the dielectric.
- The reason is false: Free electrons are not formed; the existing electrons are merely redistributed.

5. **Conclusion**:
- Since the assertion is true and the reason is false, the correct answer is that only the assertion is true, and the reason is false.

### Final Answer:
- The assertion is true, and the reason is false.