What did j. j. thomson observe when he applied electric voltage to a cathode ray tube in his famous experiment? a. the stream of cathode ray particles was moving very slowly. b. the glass opposite of the negative electrode started to glow. c. the electric voltage had little effect on the stream of particles. d. the tube contained two pieces of metal that served as electrodes.

Option B

Explanation:

J.J. Thomson, through his famous Cathode ray experiment proved that all atoms contain small negatively charged particles known as electrons. In the experiment, he applied electric voltage across a cathode ray tube. a fluorescent material coating was done on the positive side. When the voltage was applied, the positive side has glowing dots.

Thus, option B is correct.

Option B

Explanation:

There are two electrodes in the tube. One is cathode and the anode is anode. behind the anode, there is a coating of fluorescent material on the wall of the tube, so when the electrons strikes to the wall, the wall starts glowing.

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