EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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has rust on it.
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is lighter than the penny.
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has a sharp point.
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contains iron.
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Detailed explanation-1: -A magnet will pick up a nail, but not a penny because the nail. has rust on it.
Detailed explanation-2: -When iron nails are brought near one end of a magnet, the nearer end of iron piece acquires an opposite polarity by magnetic induction. Since unlike poles attract each other, therefore, iron nails are attracted towards the end of the magnet.
Detailed explanation-3: -Bringing two iron nails close to each of them won’t create any kind of reaction from either of the nails. Explanation: Since both the nails are made up of the same material iron and iron has no reaction to the same metal. Hence bringing the nails closer to each other doesn’t make any difference.
Detailed explanation-4: -Expert Answer Correct answer is Option A that is temporary magnet Option A : Temporary magnet are those which only retain their magnetism when they are …