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Why frictional force gets increased when...

Why frictional force gets increased when two surfaces in contact are polished beyond a certain limit ?

A

irregularities are increased

B

surface projections are shapened

C

actual contact area is decreased

D

actual contact area is increased

Text Solution

Verified by Experts

The correct Answer is:
D
By extra polishing contact area is increased.
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TRUE/FALSE TYPE QUESTIONS: Frictional force gets increased when a surface is polished beyond a certain limit.

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