Problem: Which quantity did Thomson measure in his cathode-ray tube experiments?a. The speed of lightb. The charge of an electronc. The mass of an electrond. The charge-to-mass ratio of an electrone. Avogadro’s number

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We are asked which quantity did Thomson measure in his cathode-ray tube experiments

J.J. Thomson’s cathode ray tube experiments led to the discovery of the electron. 


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Which quantity did Thomson measure in his cathode-ray tube experiments?

a. The speed of light
b. The charge of an electron
c. The mass of an electron
d. The charge-to-mass ratio of an electron
e. Avogadro’s number