A: Superconductors are perfect diamagnetic.
R: Superconductors are perfect conductors.

Options

A. If both Assertion & Reason are the true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reson 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 analyze the given statements about superconductors, let's break down the assertions and reasons step by step.

### Step 1: Understanding the Assertion
**Assertion (A): Superconductors are perfect diamagnetic.**

- This statement is correct. Superconductors exhibit a phenomenon known as perfect diamagnetism, which means they completely expel magnetic fields from their interior when cooled below a certain critical temperature. This is a result of the Meissner effect.

### Step 2: Understanding the Reason
**Reason (R): Superconductors are perfect conductors.**

- This statement is also correct. Superconductors have zero electrical resistance, which means they can conduct electricity without any energy loss. This characteristic makes them perfect conductors.

### Step 3: Analyzing the Relationship Between A and R
- While both statements are correct, they are not directly related to each other. The fact that superconductors are perfect conductors does not directly cause them to be perfect diamagnetic. The perfect diamagnetism is a result of the Meissner effect, which occurs in the superconducting state.

### Step 4: Conclusion
- Since both the assertion and the reason are correct, but they do not explain each other, the correct answer to the question is that both statements are true, but the reason does not support the assertion.

### Final Answer
- The answer is option 2: Both A and R are true, but R is not the correct explanation of A.

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