Assertion :Magnetic susceptibility is a pure number. Reason: The value of magnetic susceptibility for vacuum is one.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field.
$M = χ H$
Magnetic susceptibility of vacuum is 0 since vacuum cannot be magnetized.

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