KEAM 2023 Physics and Chemistry Solved Paper

Question : 25 of 120

Marks: +1, -0

Select the incorrect statement about friction:

Static friction force is always equal to µN, where µ is co-efficient of static friction and N is normal force.
Friction is a non-conservative force.
Friction arises from electro-magnetic force.
Friction always opposes relative motion between two surfaces.
Maximum value of static friction is µN, where µ is co-efficient of static friction and N is normal force.

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