A short bar magnetic is placed in a unif...

A short bar magnetic is placed in a uniform magnetic field of 0.25 T, with its axis at an angle of `30^(@)` with the field. If it experiences a torque of magnitude `4.5xx10^(-2)` N m, then its magnetic momentum is

`0.36"N m T"^(-1)`

`0.25" N m T"^(-1)`

`0.5"N m T"^(-1)`

`1.25" N m T"^(-1)`

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