AIPMT PRELIMS2008Physics-Electricity
AIPMT PRELIMS 2008 Physics Electric Discharge MCQ Question
Type: MCQ-conceptual-Medium-Class 12
In the phenomenon of electric 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
Correct Answer
Option C
Detailed Explanation
The glow is due to the excitation of electrons in the gas atoms, which emit light when they return to a lower energy state.
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