Which of the following is NOT a method to reduce friction?

Mr. Dubey • 52.26K Points
Coach Physics

Q. Which of the following is NOT a method to reduce friction?

(A) By lubrication
(B) By polishing
(C) throwing sand on the ground
(D) None of the above

Correct Answer - Option(C)

Explanation by: Mr. Dubey

Some of the ways of reducing friction are: 
1. By polishing 
2. By lubrication 
3. By proper selection of materials 
4. By streamlining 
5. By using ball bearings

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