Q.

Friction depends upon


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a

Nature of the surface

b

Material of the surface

c

Both 1 and 2

d

Area of the two surfaces 

answer is C.

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Detailed Solution

Friction depends upon the nature of the surface and the material of the surface.
Friction is the force that resists the sliding or rolling motion of a solid object over each other. As for the example, if the surfaces are smooth, there will be less friction than the rough surface. Like when a coin is rolled over a glass panel easily, but in cloth, it moves less than a glass panel.
 
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