Question

Force of friction depends on? *

A. Smoothness of surface

B. Roughness of surface

C. Inclination of surface

D. Material of the surface​

Answer 1

• A) SMOOTHNESS OF SURFACE !
• Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth.

Answer 2

Hey mate!!
The answer will be both Smoothness and Roughness of the surface as if we increase the roughness of the surface , the friction will increase whereas if we increase the smoothness of the surface , friction will reduce!!

Hope it helps!!
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