AIPMT PRELIMS2011Physics-Electrons and Photons
AIPMT PRELIMS 2011 Physics Electron Emission MCQ Question
Type: MCQ-conceptual-Easy-Class 12
In a Thomson's experiment, the velocity of electrons emitted from the electron gun can be increased by
A
Decreasing the potential difference between the anode and filament
B
Increasing the potential difference between the anode and filament
C
Increasing the filament current
D
Decreasing the filament current
Correct Answer
Option B
Detailed Explanation
Increasing the potential difference between the anode and filament increases the kinetic energy of the electrons, thereby increasing their velocity.
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