Which of the following is not a cause of friction?

Interlocking irregularities of the surface

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Bond formation

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Area of contact of surface

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Surface Roughness

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Solution

The correct option is C Area of contact of surface
Among the given options, the area of the contact of surface does not influence friction as long as the pressing force is the same. Roughness or irregularities of surface and bond formation acting along the surfaces causes friction between moving objects. Bond formation arises when two materials are brought close to each other.

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