If a piece of metal was thought to be magnet, which one of the following observations would offer conclusive evidence

It attracts a known magnet

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It repels a known magnet

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Neither (a) nor (b)

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It attracts a steel screw driver

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Solution

The correct option is B It repels a known magnet
Repulsion is the sure test of magnetism.

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If a piece of metal was thought to be magnet, which one of the following observations would offer conclusive evidence

The correct option is B It repels a known magnetRepulsion is the sure test of magnetism.

The correct option is B It repels a known magnet
Repulsion is the sure test of magnetism.