Question

The force of friction acting on a car on different roads in the increasing order of magnitude will be

• A. Mud, tar, concrete and gravel roads
• B. Tar, concrete, gravel and mud roads
• C. Concrete, tar, gravel and mud roads
• D. Gravel, mud, tar and concrete roads

Answer 1

The correct option is C

Concrete, tar, gravel and mud roads

Force of friction varies according to the roughness or smoothness of the surface. In this case Concrete, tar gravel and mud roads are in increasing order of roughness and hence the friction is also increasing in the same order of magnitude.