Assertion (A) : The unpolarised light and polarized light can be distinguished from each other by using Polaroid.
Reason (R ) : A Polaroid is capable of producing plane polarized beams of light.

Explanation

To solve the question, we will analyze the assertion and reason provided, and determine their validity.

### Step 1: Understand the Assertion
The assertion states that unpolarized light and polarized light can be distinguished from each other using a Polaroid.

**Explanation**:
- Unpolarized light consists of waves vibrating in all possible planes, while polarized light has waves vibrating in a single plane.
- A Polaroid is a device that can filter light, allowing only the light waves vibrating in a specific direction to pass through.

### Step 2: Understand the Reason
The reason states that a Polaroid is capable of producing plane polarized beams of light.

**Explanation**:
- When unpolarized light passes through a Polaroid, it becomes polarized, as the Polaroid only allows light waves vibrating in its transmission axis to pass through.
- Therefore, a Polaroid can indeed produce plane polarized light from unpolarized light.

### Step 3: Analyze the Relationship Between Assertion and Reason
Now we need to determine if the reason provided correctly explains the assertion.

**Explanation**:
- The assertion is true because we can distinguish between unpolarized and polarized light using a Polaroid.
- The reason is also true because a Polaroid does produce plane polarized light.
- Furthermore, the reason provides a valid explanation for the assertion, as it describes how a Polaroid can differentiate between the two types of light.

### Conclusion
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer
- Both Assertion (A) and Reason (R) are true, and R is the correct explanation of A.

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