The photoelectric equation for the kinetic energy of a photoelectron is, following Einstein, E < hf-W, where; his Planck's constant fis the frequency of the light W is the work-function Sodium has W = 3.2x10^-19J. When sodium is illuminated by monochromatic light of a particular frequency, electrons are emitted with speeds up to 8×10^5ms^-1 a) Calculate the wavelength of the light. b) Calculate the stopping potential.
The photoelectric equation for the kinetic energy of a photoelectron is, following Einstein, E < hf-W, where; his Planck's constant fis the frequency of the light W is the work-function Sodium has W = 3.2x10^-19J. When sodium is illuminated by monochromatic light of a particular frequency, electrons are emitted with speeds up to 8×10^5ms^-1 a) Calculate the wavelength of the light. b) Calculate the stopping potential.
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Transcribed Image Text:The photoelectric equation for the kinetic energy of a photoelectron is,
following Einstein, E < hf-W, where;
h is Planck's constant
fis the frequency of the light
W is the work-function
Sodium has W = 3.2x10^-19J. When sodium is illuminated by
monochromatic light of a particular frequency, electrons are emitted with
speeds up to 8×10^5ms^-1
a) Calculate the wavelength of the light.
b) Calculate the stopping potential.
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