Question

The opposing force acting between two surfaces is
(a) frictional force
(b) gravitational force
(c) electrostatic force
(d) magnetic force​

Answer 1

a). frictional force

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Answer 2

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The opposing force acting between two surfaces is

(a) frictional force

(b) gravitational force

(c) electrostatic force

(d) magnetic force

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Frictional force is applied along the surfaces and depends on contact. hence it is not a repulsive force.

Electrostatic and magnetic forces can be either attractive or repulsive. Here, when two objects are experiencing repulsive force because there may be an electrostatic force or a magnetic force.

∴ The answer is option A.