In the phenomenon of electric discharge through gases at low pressure, the coloured glow in the tube appears as a result of

Options

(a) Collisions between the charged paricles emitted from the cathode and the atoms of the gas
(b) Collision between different electrons of the atoms of the gas
(c) Excitation of electrons in the atoms
(d) Collision between the atoms of the gas

Correct Answer:

Collisions between the charged paricles emitted from the cathode and the atoms of the gas

Explanation:

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