A paramagnetic liquid is taken in a U-tube and arranged so that one of its limbs is kept between pole pieces of the magnet. What happens to the liquid level in the limb?
A
goes down
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B
rises up
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C
remains same
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D
first goes down and then rise
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Solution
The correct option is B
rises up
Paramagnetic substances
They are substances that are weakly attracted by a magnet.
They do not retain their magnetic property when the external field is removed.
Eg: aluminum, platinum, sodium, etc.
Explanation
Since paramagnetic substances show magnetic behavior, when the pole pieces of a magnet are placed around a limb of a U-tube containing a paramagnetic substance, the paramagnetic substance gets attracted to the magnet and rises up.
The figure shows the rise in the height of paramagnetic substances in the U-tube when the side is magnetized using magnets.