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>>Class 11
>>Physics
>>Laws of Motion
>>Types of Friction
>> $Which one of the following is not used t$

Question

Which one of the following is not used to reduce friction.

A

Oil

B

Ball bearings

C

Sand

D

Graphite

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Solution

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Correct option is C)

Sand is not used to reduce frriction because it is a not smooth instead it is rough which can increase the friction.

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