If F1 and F2 are the strengths of magnetic fields at same distance ‘d' , from the centre of a bar magnet, on axial and equatorial lines respectively, show that F1/F2 =2+7l^2/d^2 , where ‘l’ is the magnetic length.
If F1 and F2 are the strengths of magnetic fields at same distance ‘d' , from the centre of a bar magnet, on axial and equatorial lines respectively, show that F1/F2 =2+7l^2/d^2 , where ‘l’ is the magnetic length.