1.

A neutron exerts a force on a proton which is(a) gravitational (b) electromagnetic(c) nuclear(d) weak.

Answer»

(a) gravitational
(c) nuclear

Explanation:

A neutron exerts both the gravitational and nuclear forces on a proton. 

The gravitational force can be seen between a neutron and a proton. However, its strength is negligible. The nuclear force is exerted only if the interacting particles are neutrons or protons or both. A neutron cannot exert electromagnetic force, because it is a neutral particle



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