Light of wavelength 400 nm and intensity 10^-2 W/m2 is incident on potassium. (a) Estimate the...

Light of wavelength 400 nm and intensity 10^-2 W/m2 is incident on potassium. (a) Estimate the time lag for the emission of photoelectrons expected classically. Assume the typical radius of an atom is 10 ^-10 m. Hint: Relate the light intensity to the work function for potassium. (b) How many photons are incident per second per square meter

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genius_generous answered 3 years ago

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