What is the work function for this metal

Reference no: EM13497162

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 (? = 546.1 nm) is used, a stopping potential of 0.722 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 (? = 630.0 nm)?

_______V

Reference no: EM13497162

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