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The ball bearings used in a machine are ...

The ball bearings used in a machine are of different materials, this is because

A

adhesive forces are greater than cohesive forces.

B

adhesive forces and cohesive forces are rqual in magnitude, opposite in direction ,

C

adhesive forces are less than choesive forces.

D

machine looks good, attractive.

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Verified by Experts

The correct Answer is:
C
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (CRITICAL THINKING)
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