Which of the following statements about the concept of solid friction is NOT true?

Physics

NECO 2003

A. It always acts in the direction of motion
B. It causes wear and tear in car tyres
C. It depends on the nature of the surfaces in contact
D. It is independent of the area of the surfaces in contact.
E. It reduces the efficiency of the machine

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Correct Answer: Option A

Explanation

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Which of the following statements about the concept of solid friction is NOT true?

Correct Answer: Option A

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