1.

M and Msqrt(3) are the magnetic dipole moments of the two magnets which are joined to form a cross figurre the inclination of the systemwith the fiedl if theircombination is suspended freelyin a uniform external magnetic field B is

Answer»

`theta=30^(@)`
`theta=45^(@)`
`theta=60^(@)`
`theta=15^(@)`

Solution :In equlibrium `tau_(1)=tau_(2)`
MB `SIN theta =sqrt(3)` MB sin `(90^(@)-theta)`
`therefore tan theta =sqrt(3) rarr theta =60^(@)`


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