Physics
A soft iron bar is tied by a thread in the middle and is suspended from a rigid support such that it is free to rotate in a horizontal plane. It shall come to rest :
- along north-south direction
- along east-west direction
- equally inclined to N-S and E-W direction
- in any direction
Related Questions
The magnetic field lines of the earth are …………… to the earth's surface near the magnetic poles and …………… to the earth's surface near the magnetic equator.
- parallel, normal
- normal, parallel
- normal, normal
- parallel, parallel
The direction of a magnetic field at a point on a magnetic field line is given by :
- a tangent at that point
- a normal bisector at that point
- both tangent and normal bisector at that point
- none of the above
The figure given below shows two iron nails attached to the end of a magnet. Choose the correct figure:
A freely suspended bar magnet is taken to the north pole of the earth. It comes to rest :
- in any direction
- parallel to the earth’s surface
- nearly vertical with the south pole in a downward direction
- nearly vertical with the north pole in a downward direction.