Question

What are cathode rays​

Answer 1

Step-by-step explanation:

a beam of electrons emitted from the cathode of a high-vacuum tube.

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Answer 2

Answer:

Cathode rays are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode.