In a photoelectric experiment using a Potasium surface, you find a stopping potential of 0.57 V for a wavelength of 434 nm and a stopping potential of 2.30 V for a wavelength of 271 nm. Because this is an experiment, your value of Planck's constant will be slightly different from the official value. From these data find a) a value for Planck's constant h 8.81 x10-34 J · s b) the work function for Potasium 2.29 eV c) the cutoff wavelength for this metal 541.5 пт
In a photoelectric experiment using a Potasium surface, you find a stopping potential of 0.57 V for a wavelength of 434 nm and a stopping potential of 2.30 V for a wavelength of 271 nm. Because this is an experiment, your value of Planck's constant will be slightly different from the official value. From these data find a) a value for Planck's constant h 8.81 x10-34 J · s b) the work function for Potasium 2.29 eV c) the cutoff wavelength for this metal 541.5 пт
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Transcribed Image Text:In a photoelectric experiment using a Potasium surface, you find a stopping potential of 0.57 V for a wavelength of
434 nm and a stopping potential of 2.30 V for a wavelength of 271 nm.
Because this is an experiment, your value of Planck's constant will be slightly different from the official value.
From these data find
a) a value for Planck's constant h
8.81
x10-34 J . s
b) the work function for Potasium
2.29
eV
c) the cutoff wavelength for this metal
541.5
пт
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