Find the cutoff wavelength for the photoelectric tube

Reference no: EM13538081

When 200nm light is incident on the cathode of a photoelectric tube, the stopping potential is 4.2V. A) Find the velocity of the most energetic electron emitted from the cathode when the incident light on the cathode is 100nm. B) Find the cutoff wavelength for the photoelectric tube.

Reference no: EM13538081

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