Physics
If a magnet is suspended with a silk thread such that it is free to rotate in a horizontal plane, it sets itself always pointing in the :
- geographic east-west direction
- magnetic east-west direction
- geographic north-south direction
- None of the above
Answer
geographic north-south direction
Reason — If a magnet is suspended with a silk thread such that it is free to rotate in a horizontal plane, it will align itself in the geographic north-south direction. This alignment is due to the Earth's magnetic field, which exerts a force on the magnet and causes it to align along the magnetic field lines.
Related Questions
The first known magnets were pieces of :
- bauxite
- lodestone
- limestone
- None of the above
The …………… magnetism acquired by a magnetic material when it is kept near a magnet is called …………… magnetism.
- temporary, induced
- permanent, induced
- temporary, permanent
- None of the above
Two like magnetic poles:
- repel each other
- attract each other
- first attract each other, then repel
- neither attract nor repel.
A magnetic pole induces …………… polarity on the near end and a …………… polarity on the farther end of the iron bar.
- opposite, opposite
- similar, similar
- opposite, similar
- similar, opposite