Question

the type of force which will never be zero between 2 separate masses is :-

1- electrostatic force
2- frictional force
3- magnetic force
4- gravitational force

Answer 1

Thanks for asking the question.

The correct answer is option 4 that is gravitational force because it can never be zero as it depends upon mass and mass is never zero. All the other forces can be zero. Electrostatic force becomes zero when the charge becomes zero. Frictional force is zero for smooth surfaces and magnetic force is zero when magnetic field is zero.
Hope it helps.