Canal rays are produced in the discharge tube from -------
Correct answer: C. Gas molecules in the tube
- A. Anode
- B. Cathode
- C. Gas molecules in the tube
- D. None of these
Explanation
Option C is correct since the electrons emitted from the 'cathode' collide with the gas atoms found in the tube, knocking one or two additional electrons out of each of these atoms. These collisions leave behind ions that are positively charged. The produced positive ions travel towards the cathode. Hence canal rays are produced from gas molecules in the tube.
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