If we apply oil on door hinges, the friction will
$(a)$. increase
$(b)$. decrease
$(c)$. disappear altogether
$(d)$. will remain unchanged

AcademicPhysicsNCERTClass 8

Applying oil to door hinges will decrease the friction because oil works as a smoothening agent.

So, option $(b)$ is correct.

raja
Updated on 10-Oct-2022 13:29:10

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