Two light sources are used in a photoelectric experiment to determine the work function of a particular metal surface. When green light from a mercury lamp (546.1 nm) is used, a stopping potential of 0.376 V reduces the photocurrent to zero. Based on this measurement, what is the work function of this metal?

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A: The parameters of the loaded Zener regulator is given as, VZ=5.1 V at IZ=49 mA, IZK=1 mA, ZZ=7 Ω,…

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A: 3)

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A: Solution:-Given thatWA=80 kNμAB=0.3μBD=0.2WB=100 kN

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A: Required : The increase in the voltage.

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