Multiple choice

Which of the following statements is incorrect?

  1. Magnitude of charge in canal rays may vary.

  2. Magnitude of charge in cathode rays does not vary.

  3. Mass of the particles in canal rays may vary.

  4. Mass of the particles in cathode rays may vary.

  5. Canal rays possess positive charge.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cathode rays are made up of electrons and the mass of an electron is fixed. Therefore, the mass of the particles of the cathode rays is fixed, irrespective of the nature of the gas in the cathode ray tube.