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Assertion: Above Curie temperature, a fr...

Assertion: Above Curie temperature, a frerromagnetic material becomes paramagnetic.
Reason: When a magnetic material is heated to very high temperature, it loses its magnetic properties.

A

If both Assertion and Reason are true and Reason is correct explanation of Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason provided, we will analyze both statements step by step. ### Step 1: Understanding the Assertion The assertion states that "Above Curie temperature, a ferromagnetic material becomes paramagnetic." - **Explanation**: Ferromagnetic materials have a strong magnetic ordering due to the alignment of magnetic dipoles. The Curie temperature (Tc) is the temperature above which this magnetic ordering is lost. When the temperature exceeds Tc, the thermal energy is sufficient to disrupt the alignment of these dipoles, leading to a transition from ferromagnetic to paramagnetic behavior. ### Step 2: Understanding the Reason The reason states that "When a magnetic material is heated to very high temperature, it loses its magnetic properties." - **Explanation**: As a magnetic material is heated, especially beyond its Curie temperature, the thermal agitation increases. This agitation causes the magnetic dipoles to become misaligned, resulting in a loss of the material's magnetic properties. In the case of ferromagnetic materials, this loss of alignment leads to paramagnetism, where the material can still exhibit some magnetic properties but is much weaker and dependent on the presence of an external magnetic field. ### Step 3: Conclusion Both the assertion and the reason are true. The assertion correctly describes the behavior of ferromagnetic materials above the Curie temperature, and the reason accurately explains the loss of magnetic properties due to heating. ### Final Answer: - **Assertion**: True - **Reason**: True - **Conclusion**: The assertion is correct and the reason is also correct; the reason provides a valid explanation for the assertion.
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