A paramagnetic sample shows a net | EMF | JEE-MAIN 2020

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JEE MAIN 2020

04.09.20_S2

Question

A paramagnetic sample shows a net magnetisation of $6 \mathrm{~A} / \mathrm{m}$ when it is placed in an external magnetic field of 0.4 T at a temperature of 4 K . When the sample is placed in an external magnetic field of 0.3 T at a temperature of 24 K , then the magnetisation will be

Select the correct option:

A

$1 \mathrm{~A} / \mathrm{m}$

B

$0.75 \mathrm{~A} / \mathrm{m}$

C

$4 \mathrm{~A} / \mathrm{m}$

D

$2.25 \mathrm{~A} / \mathrm{m}$

✓ Correct! Well done.

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