Which of the following are contact forces?
A. Friction
B. Gravitational force
C. Magnetic force
D. Muscular force
$(a)$. A and B
$(b)$. B and C
$(c)$. A and D
$(d)$. B and D

Academic Physics NCERT Class 8

Friction force and muscular force can't act without contact.

So, (A) and (D) is correct.

Therefore option (c) is correct.

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Updated on: 10-Oct-2022

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