question_answer

The known forces of nature can be divided into four classes, viz. gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statement is not correct?

A)  Gravity is the strongest of the four

B)  Electromagnetism act only on particles with an electric charge

C)  Weak nuclear force causes radioactivity

D) Strong nuclear force holds protons and neutrons inside the nucleus of an atom