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VITEEE 2010 Solved Paper

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Question : 23

Total: 120

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

the photo-current will increase
the kinetic energy of the electrons will increase
the stopping potential will decrease
the threshold wavelength will increase

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