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Applications of Friction

helps in writ...

Question

_______ helps in writing with a pen or pencil on a paper.

A

Magnetic force

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B

Electric charge

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C

Chemical force

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D

Frictional force

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Solution

The correct option is D Frictional force
The irregularities between the paper and the pen or pencil create friction. Due to friction, the particles of ink or lead stick to the paper and get locked in its irregularities. If there would be no friction between the paper and pen or pencil, the ink/lead would not stick to the paper and we would not be able to write.

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