The solution of the problem 3.72 кр 3 from the problem

The solution of the problem 3.72 кр 3 from the problem

Task 3.72
The cathode of a vacuum photocell is illuminated by light with a wavelength of 0.38 μm. The photocurrent stops when
Delaying the potential difference of 1.4 V. Find the work function of electrons from the cathode.

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