A : The unpolarised light and polarised light can be distinguished from each other by using polaroid.
R : A polaroid is capable of producing plane polarised beams of light.

Options

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true and R is not the correct explanation of A
C. A is true and R is false
D. Both A and R are false

Answer

To solve the question, we need to analyze the statements A and R separately and determine their validity.

### Step 1: Understanding Statement A
Statement A claims that "The unpolarised light and polarised light can be distinguished from each other by using polaroid."

- **Explanation**: This statement is true. A polaroid is a device that can filter light waves, allowing only those that are aligned with its axis to pass through. When unpolarised light (which contains waves vibrating in all directions) passes through a polaroid, it becomes polarised light, and the intensity of the transmitted light is reduced. This reduction in intensity can be measured, allowing us to distinguish between unpolarised and polarised light.

### Step 2: Understanding Statement R
Statement R claims that "A polaroid is capable of producing plane polarised beams of light."

- **Explanation**: This statement is also true. A polaroid works by absorbing light waves that are not aligned with its transmission axis, thus producing plane polarised light. The light that emerges from the polaroid is polarised in a single plane, which is a characteristic of plane polarised light.

### Step 3: Conclusion
Since both statements A and R are true, and R provides a correct explanation for A, we can conclude that both statements are correct and related.

### Final Answer
Both A and R are true, and R is the correct explanation of A.

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