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Friction is caused by...

Friction is caused by

A

interlocking betweeen the irregularities on the contact surface.

B

apparent area of contact.

C

repulsive force between air and surface in earth .

D

gravitational force of attraction towards the earth.

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The correct Answer is:
A
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (EVALUATION TEST)
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