A: Light waves can be polarised.
R: Light waves are transverse in nature.

Options

A. IF both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark(2)
C. IF Assertion is true statement but Reason is false then mark(3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Light waves can be polarised."
- This is true because light waves, being electromagnetic waves, can indeed be polarized. Polarization refers to the orientation of the oscillations of the wave.

**Hint**: Recall the definition of polarization and its relation to the orientation of wave oscillations.

2. **Understanding the Reason**:
- The reason states that "Light waves are transverse in nature."
- This is also true. Light waves are transverse waves, meaning that the oscillations of the electric and magnetic fields are perpendicular to the direction of wave propagation.

**Hint**: Remember the characteristics of transverse waves and how they differ from longitudinal waves.

3. **Connecting Assertion and Reason**:
- The reason explains why the assertion is correct. Since light waves are transverse, they can be polarized. Polarization is a phenomenon that occurs only in transverse waves, as it involves the alignment of oscillations in a particular direction.

**Hint**: Think about how the nature of a wave (transverse vs. longitudinal) affects its ability to be polarized.

4. **Conclusion**:
- Both the assertion and the reason are correct, and the reason correctly explains the assertion. Therefore, the correct choice is that both statements are true, and the reason is valid in explaining the assertion.

**Hint**: Look for the relationship between the two statements to determine if one supports the other.

### Final Answer:
Both the assertion and the reason are correct, and the reason explains the assertion.