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प्रश्न
How do you account for the following fact?
Bar magnets lose their magnetism when heated strongly.
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उत्तर
Bar magnets lose their magnetism when heated strongly. Due to heat energy, the kinetic energy of the molecules of a barg magnet increases. Thus from straight-line molecular chains, they form closed molecular chains, and hence, magnetism is lost.
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संबंधित प्रश्न
Fill in the blank to complete the sentence :
The two ends of a magnet are called __________.
Fill in the blank to complete the sentence :
Unlike poles of a magnet ___________ each other.
Fill in the blank to complete the sentence :
Like poles of a magnet ______________ each other.
Fill in the blank to complete the sentence :
A freely suspended magnet rests in the geographic ___________ direction.
Explain a suitable experiment of magnetic induction?
A magnet is carefully broken into two halves along its long axis as shown in the figure. How would the magnetic strength of each piece compare with that of the original magnet?
A conductor B is charged by bringing another charged body A in contact 
What will be the charge gained by B?
A conductor B is charged by bringing another charged body A in contact
Explain the process of charging B.
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(i) If you had a magnet?
(ii) If there was no magnet available.
Give scientific reason:
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