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Standard XII
Physics
Stopping Potential
Question

When stopping potential is applied in an experiment on photoelectric effect, no photocurrent is observed. This means that
  1. The photoelectrons are dispersed from the sides of the apparatus.
  2. The emission of photoelectrons is stopped
  3. The photoelectrons are accumulated near the collector plate.
  4. The photoelectrons are emitted but are reabsorbed by the emitter metal

A
The photoelectrons are emitted but are reabsorbed by the emitter metal
B
The photoelectrons are dispersed from the sides of the apparatus.
C
The emission of photoelectrons is stopped
D
The photoelectrons are accumulated near the collector plate.
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Solution
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When stopping potential is applied in an experiment on photoelectric effect, no photocurrent is observed. This means that the photoelectrons are accumulated near the emitter plate and are reabsorbed. They can't reach the collector plate.
So, the answer is option (B).

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