positive rays are also called
Correct answer: A. Canal rays
- A. Canal rays
- B. Cathode rays
- C. Both a and b
- D. None
Explanation
Positive rays are called canal rays which are streams of positively charged particles found in cathode ray tubes. Cathode rays are streams of electrons emitted from the negative electrode, or cathode, of a vacuum tube when a high voltage is applied across it. This is incorrect since option A is correct. This is incorrect since option A is correct.
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About Discovery of the Proton
The discovery of the proton follows the study of positive rays, also called canal rays, observed in discharge tubes and later identified as positively charged particles. The work of Goldstein and Rutherford is linked to the proton's charge, relative mass and role in the nuclear model, distinct from the discovery of the electron.
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