STATEMENT-1 : A photodiode is used in receivers in optical communication
STATEMENT-2 The photodiode has a resistance that varies according to intensity of light incident on it

Options

A. Statement-1 is True. Statement-2 is True
Statement-2 is a correct explanation for statement-1
B. Statement 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 analyze the statements provided in the question, we will break down each statement and evaluate their validity.

### Step-by-Step Solution:

1. **Understanding Statement 1**:
- The first statement claims that "A photodiode is used in receivers in optical communication."
- In optical communication systems, photodiodes are indeed used as receivers to detect light signals transmitted through optical fibers. Therefore, this statement is **true**.

2. **Understanding Statement 2**:
- The second statement claims that "The photodiode has a resistance that varies according to the intensity of light incident on it."
- Photodiodes operate by converting light into electrical signals. The amount of current generated by the photodiode is proportional to the intensity of the incident light. As the intensity of light increases, the current increases, which can lead to a change in resistance. Thus, this statement is also **true**.

3. **Evaluating the Relationship Between the Statements**:
- While both statements are true, we need to determine if Statement 2 correctly explains Statement 1.
- Statement 1 is about the role of the photodiode in optical communication, while Statement 2 describes a property of the photodiode. Although Statement 2 provides information about how a photodiode works, it does not explain why it is used as a receiver in optical communication.
- Therefore, Statement 2 is not a correct explanation for Statement 1.

4. **Conclusion**:
- Both statements are true, but Statement 2 does not serve as a valid explanation for Statement 1. Hence, the correct answer is that Statement 1 is true, Statement 2 is true, but Statement 2 is not the correct explanation for Statement 1.

### Final Answer:
- **Statement 1**: True
- **Statement 2**: True
- **Explanation**: Statement 2 is not a correct explanation for Statement 1.