In a photoelectric experiment, the collector plate is at 2.0V with respect to the emitter plate made of copper `(phi)=4.5eV)`. The emitter is illuminated by a source of monochromatic light of wavelength 2000 `Å`nm.A. The maximum kinetic energy of the photoelctrons reaching the collector is `0`.B. The maximum kinetic energy of the photoelctrons reaching the collector is `3.7` .eV.C. If the polarity of the battery is reversed then answer to part A willl be 0D. If the polarity of the battery is reversed then answer to part B will be `1.7 eV`

In a photoelectric experiment, the collector plate is at 2.0V with res

1.	In a photoelectric experiment, the collector plate is at 2.0V with respect to the emitter plate made of copper `(phi)=4.5eV)`. The emitter is illuminated by a source of monochromatic light of wavelength 2000 `Å`nm.A. The maximum kinetic energy of the photoelctrons reaching the collector is `0`.B. The maximum kinetic energy of the photoelctrons reaching the collector is `3.7` .eV.C. If the polarity of the battery is reversed then answer to part A willl be 0D. If the polarity of the battery is reversed then answer to part B will be `1.7 eV`
Answer» Correct Answer - B `K_(max) = (1242)/(200) eV - 4.5 eV` `K_(max) = 1.7 eV` at cathode `K_(max) = (1.7 + 2) eV` at anode If polarity is reversed, no `e^(-)` reach at collector.

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