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In the Davisson and Germer experiment, the velocity of electrons emitted from the electron gun can be increased by:

  1. A
    Decreasing the potential difference between the anode and filament
  2. B
    Increasing the potential difference between the anode and filament
  3. C
    Increasing the filament current
  4. D
    Decreasing the filament current

Solution & Step-by-step Explanation

The kinetic energy (and thus velocity) of the electrons is directly proportional to the accelerating potential difference applied between the filament and the anode (). Increasing increases the velocity of the emitted electrons. Filament current only affects the number of electrons (intensity), not their velocity.

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In the Davisson and Germer 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

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