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Magnetic Susceptibility

Assertion : T...

Question

Assertion : The product of magnetic susceptibility and absolute temperature for a paramagnetic substance is constant.
Reason : Susceptibility is positive but very small for paramagnetic substance.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

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B

If both assertion and reason are true and reason is not the correct explanation of assertion.

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C

If assertion is true but reason is false.

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D

If both assertion and reason are false

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Solution

The correct option is C If both assertion and reason are true and reason is not the correct explanation of assertion.
The susceptibility of a paramagnetic substance is inversely proportional to absolute temperature.
$X \propto \frac{1}{T}$
Hence $X T = c o n s t a n t$
Also for paramagnetic substances the susceptibility is positive and very small.

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