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a paramagnetic sample slows net magnetis...

a paramagnetic sample slows net magnetisation of 18 `Am^(-1)` when placed in an external magnetic field of 0.9 T at a temperature of 36 K. When the same sample is placed in an external magnetic field of 0.3T at a temperature of 54 K, the magnetisation will be

A

`4 A m^(-1)`

B

`81 Am^(-1)`

C

`36Am^(-1)`

D

`9Am^(-1)`

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