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The collector plate in an experiment on ...

The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate . Light source is put on and a saturation photo current is recorded . An electric field is switched on which has a vertically downward direction . Then

A

The photocurrent will increased

B

The kinetic energy of the electrons will increase.

C

The stopping potential will decrease.

D

The threshold wavelength will increase.

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The correct Answer is:
A
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