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- Confused! kindly explain, Needles N1,N2,and N3 are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will
Needles N1,N2,and N3 are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will
- Option 1)
attract all three of them
- Option 2)
attract N1 and N2 strongly but repel N3
- Option 3)
attract N1 strongly, N2 weakly and repel N3 weakly
- Option 4)
attract N1 strongly, but repel N2 and N3 weakly.
Answers (1)
As we learnt in
Behaviour in a non- uniform magnetic field -
These are strongly attracted in an external magnetic field (in ferromagnetic substance)
- wherein
Behaviour in a non-uniform magnetic field -
These are feebly attracted in an external magnetic field (in paramagnetic substance)
- wherein
Behaviour in a non uniform magnetic field -
These are repelled in an external magnetic field. (In diamagnetic substance)
- wherein
Magnet will attract N1 strongly, N2 weakly and repel N3 weakly .
Option 1)
attract all three of them
Incorrect
Option 2)
attract N1 and N2 strongly but repel N3
Incorrect
Option 3)
attract N1 strongly, N2 weakly and repel N3 weakly
Correct
Option 4)
attract N1 strongly, but repel N2 and N3 weakly.
Incorrect
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