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RRB Group D Model Paper 4 with solutions
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© examsnet.com
Question : 54
Total: 100
Cathode rays are ________.
electromagnetic waves
radiations
stream of α-particles
stream of electrons
Validate
Solution:
(4) A cathode ray is a beam of electrons in a vacuum tube travelling from the negatively charged electrode (cathode) at one end to the positively charged electrode (anode) at the other, across a voltage difference between the electrodes.
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