Physics · Mechanics - Friction
Select the correct option based on the assertion (A) and reason (R) listed below. Assertion (A): Highly polishing two surfaces beyond a certain limit and bringing them into close contact can increase friction rather than reduce it due to cold welding. Reason (R): Rough surfaces generally have higher interlocking friction between them than moderately smooth surfaces.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both A and R are true
- 2Both A and R are false
- 3A is false but R is true
- 4A is true but R is false✓
Correct answer
A is true but R is false
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