MCQ 14: Incorrect statement for co-efficient of friction could be that A. The coefficient of friction is denoted by the Greek letter µ. B. The coefficient of friction is directly proportional to the force of friction C. The coefficient of friction is constant even in the conditions of fast slipping and high contact pressure D. The coefficient of friction is inversely proportional to the force pressing the surfaces together
we can say that friction force is independent of area of contact. So "Frictional force is proportional to the area of contact between the surfaces" is wrong statement.
