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Question

Generally, a rougher surface will have


  1. Less friction as compared to a smoother one.

  2. Same friction as compared to a smoother one.

  3. Higher friction as compared to a smoother one.

  4. No friction.


Solution

The correct option is C

Higher friction as compared to a smoother one.


A rougher surface will have more irregularities as compared to a smooth surface and hence more interlocking. It has higher friction than a smooth surface and higher amount of force has to be applied.

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