Which one of the following forces is a contact force?
$(a)$. Force of gravity
$(b)$. Force of friction
$(c)$. Magnetic force
$(d)$. Electrostatic force


A frictional force can be acted only when the surfaces of two objects are in contact. So, the Force of friction is a contact force.

Therefore, option $(b)$ is correct.

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Updated on: 10-Oct-2022

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