Question

J. J. Thomson’s experiment disproved the theory that an atom

Answer 1

The choices can be found elsewhere and as follows:

is divisible.
is indivisible.
contains protons.
contains electrons.

I believe the correct answer is the second option. J. J. Thomson’s experiment disproved the theory that an atom is indivisible. Hope this answers the question.

Answer 2

Answer : J. J. Thomson’s experiment disproved the theory that an atom is indivisible.

Explanation : Scientist J.J. Thomson did his experiment to prove the existence of electrons. He did the experiment using a cathode ray tube, in which a vacuum-sealed tube with a cathode and anode on one end was placed which created a beam of electrons that traveled towards the other end of the tube. This was the theory that proved that atoms consists of many subatomic particles namely electrons.