Question

the speed of the cathode rays is​

Answer 1

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Consider A high voltage, often as high as 3000 V, is connected between the cathode and the anode of the cathode ray tube and this accelerates the electrons to a high speed – around 30 000 000 m/s or about 1/10 of the speed of light! ( The beam of electrons is called a cathode ray because it starts from the cathode).

Answer 2

Answer:

Cathode rays are found to have velocity upto one tenth of the velocity of light.

The e/m of electrons was measured by J . J. Thomson (To create of discovering electron is given to Thomson).

The e/m of an electron is called the specific charge of an electron.