All the given forces i.e electromagnetic, gravity and nuclear force over a given field and hence can be categorized as field force.
Option A.
Explanation:
A field force is a force is a type of force that acts over an area of field. A field force, also known as noncontact or at-a-distance force are of four types namely,
- Gravity- attractive force between two objects placed anywhere on the surface of the earth.
- Electromagnetic force-physical interaction that acts between two electrically charged bodies
- Strong nuclear force- caused by the exchange of any of the three subatomic particles, pions ([tex]\bold{\pi^0, \pi^+, \pi^-}[/tex]
- Weak nuclear force- mechanism of the movement and interactions between the subatomic particles responsible for the radioactive decay of atoms.
