Physics · 2020
JEE Main · 4 September 2020, Shift 2 · Q14
A paramagnetic sample shows a net magnetisation of 6 A/m when it is placed in an external magnetic field of 0.4 T at a temperature of 4 K. When the…
A paramagnetic sample shows a net magnetisation of $\displaystyle 6$ A/m when it is placed in an external magnetic field of $\displaystyle 0.4$ T at a temperature of $\displaystyle 4$ K . When the sample is placed in an external magnetic field of $\displaystyle 0.3$ T at a temperature of $\displaystyle 24$ K , then the magnetisation will be :
Official answer
(4)
0.$\displaystyle 75$ A/m
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.