What stopping potential would be observed

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Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (lambda = 546.1 nm) is used, a stopping potential of 0.850 V reduces the photocurrent to zero.

(a) Based on this measurement, what is the work function for this metal? eV

(b) What stopping potential would be observed when using light from a red lamp (lambda= 671.0 nm)? V

Reference no: EM13273420

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