Friction can be reduced by which of the following?I. Polishing surface – McqOptions

MCQOPTIONS

1.	Friction can be reduced by which of the following?I. Polishing surfacesII. Use of lubricantsIII. Decreasing area of contact
A.	Only I
B.	Only II
C.	Only I and II
D.	All options are correct
Answer» E.

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