Q. In the phenomenon of electron discharge through gases at low pressure, the coloured glow in the tube appears as a result of
A) Collisions between the charged particles 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
Explanation
The correct answer is Option C: Excitation of electrons in the atoms.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.