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प्रश्न
Answer the following in detail.
Write a short note on the theory of magnetism.
उत्तर
All substances are made of minute particles. In a magnetic substance whether magnetized or non-magnetized), each individual particle behaves like an independent magnet. In the unmagnetized state, these particles within the substance are present in a random fashion such that they cancel out the magnetic effects of each other.
In a magnetized state, these particles align in a particle direction and the substance behaves like a magnet.
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संबंधित प्रश्न
Fill in the blank.
Magnetic poles always exist in ...............
State if the following statement is true or false. Correct the statement if it is false.
Attraction is the surest test for magnetism.
Give a reason for the following.
Iron is a magnetic substance.
A magnet remains steady in a ________ direction.
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
People who made mariner’s compass for the first time.
Which is not attracted by a magnet?
