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Assertion:- Magnetism and superconductiv...

Assertion:- Magnetism and superconductivity are natural enemies.
Reason:- Macroscopic magnetic properties depend on electrons that are lined up parallel to one another, while superconductivity requries pairs of electrons with their spins in oppsoite directions.

A

If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.

B

If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion `&` Reason are False.

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the assertion and reason provided in the question, we need to evaluate both statements and determine their validity. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Magnetism and superconductivity are natural enemies." This implies that the presence of magnetism adversely affects superconductivity. 2. **Understanding the Reason**: - The reason given is that "Macroscopic magnetic properties depend on electrons that are lined up parallel to one another, while superconductivity requires pairs of electrons with their spins in opposite directions." This suggests a fundamental conflict between the conditions necessary for magnetism and superconductivity. 3. **Evaluating the Assertion**: - In superconductors, the phenomenon of perfect conductivity occurs below a certain critical temperature. When in this state, superconductors exhibit the Meissner effect, which expels magnetic fields. Therefore, it can be said that superconductivity and magnetism do indeed have an antagonistic relationship. 4. **Evaluating the Reason**: - The reason accurately describes the nature of magnetic ordering in materials (ferromagnetism) where electron spins align parallel to each other, leading to macroscopic magnetism. In contrast, superconductivity involves Cooper pairs of electrons, which have opposite spins. This pairing is essential for the superconducting state, further supporting the assertion. 5. **Conclusion**: - Both the assertion and reason are true. The assertion is supported by the reason, which explains why magnetism and superconductivity cannot coexist harmoniously. ### Final Answer: - **Assertion**: True - **Reason**: True - **Relationship**: The reason supports the assertion.
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