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How to Increase Friction

Grooves, ridg...

Question

Grooves, ridges, and other irregularities increase the friction on a surface.

A

True

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B

False

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Solution

The correct option is A True

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Q. Assertion :On polishing the surface the friction decreases up to a certain limit but increases beyond that. Reason: On polishing the surface, the irregularities are cut off but beyond a certain limit, the surface molecules exert strong attractive forces on each other.

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