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प्रश्न
Select the correct option:
Nickel is a:
विकल्प
ferromagnetic substance
paramagnetic substance
diamagnetic substance
none of these
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उत्तर
ferromagnetic substance
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संबंधित प्रश्न
Draw a diagram to show the magnetic field lines around a bar magnet.
Explain why, two magnetic field lines of not intersect each other.
Explain why, a freely suspended magnet always points in the north-south direction.
A strong bar magnet is placed vertically above a horizontal wooden board. The magnetic lines of force will be:
(a) only in horizontal plane around the magnet
(b) only in vertical plane around the magnet
(c) in horizontal as well as in vertical planes around the magnet
(d) in all the planes around the magnet
How will you test whether a given rod is made of iron or copper?
[Hint : Iron rod gets magnetised when placed near a bar magnet by magnetic induction, while copper rod does not get magnetised]
Explain the mechanism of attraction of iron nails by a magnet when brought near them.
State four properties of magnetic field lines.
In following figure, draw at least two magnetic field lines between the two magnets.
(a) 
What conclusion is drawn regarding the magnetic field at a point if a compass needle at that point rests in any direction? Give reason for your answer.
Draw diagram showing the arrangement of the lines of force for a single magnet.
