Thomson performed his famous “cathode ray tube” experiment, and came to the conclusion that

Options

A. Under ordinary conditions of temperature and pressure gases in general are good conductors of electricity
B. The value of ‘e/m’ of the electrons, as determined in the experiment independent on the nature of the gas taken in the the tube.
C. The value of ‘e/m’ of the electrons as determined in the experiment depends on the nature of the cathode used.
D. The colour of the “light” observed in the experiment depended on the nature of the gas in the tube.