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Q.

When stopping potential is applied in an experiment of photoelectric effect, no photocurrent is observed. This means that

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a

The emission of photo electrons is stopped.

b

The photoelectrons are emitted but are reabsorbed by the emitter.

c

The photoelectrons are accumulated near the collector.

d

The photoelectrons are dispersed from the sides of the apparatus.

answer is B.

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Detailed Solution

When stopping potential is applied and no photocurrent is observed, it means the electrons emitted from the emitter are experiencing the repulsion due to negative potential on anode(collector). Because of which photoelectrons which are emitted gets reabsorbed by the emitter plate.

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