Assertion :Substances which at room temperature retain their ferromagnetic property for a long period of time are called permanent magnets. Reason: Permanent magnet can be made by placing a ferromagnetic rod in a solenoid and passing current through it.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect
A
Both Assertion and Reason are incorrect
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
C
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
D
Assertion is correct but Reason is incorrect
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Solution
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The substances that can retain their magnetic properties at the room temperature for a longer time are termed as the permanent magnets.
The permanent magnets can be obtained by keeping the ferromagnetic rod in a solenoid and the magnetic field of the solenoid magnetizes the material.
Therefore, the assertion and reason both are correct but reason is not the correct explanation of the assertion.
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