a) In a photoelectric cell, the minimum voltage required to reduce the current to zero is...

a) In a photoelectric cell, the minimum voltage required to reduce the current to zero is 3.0 V. What is the maximum kinetic energy of the electrons ejected from this cell? (format of a.b x 10^-cd J )

b) A photon of frequency 7.2 x 10¹⁵ hz is incident upon a metal whose threshold frequency is 8.9 x 10¹⁴ Hz, What is the speed of the photoelectron? (format of a.b x 10^c m/s)

c) Light with a wavelength of 425 nm falls on a photoelectric surface that has a work function of 2.0 eV. What is the maximum speed of any emitted photoelectrons? (format of a.b x 10^c m/s)

d) Electrons are ejected from a photoelectric surface with a maximum speed of 4.20 x 10⁵ m/s. If the work function of the metal is 2.55 eV, what is the wavelength of the incident light? (format of a.bc x 10^-d m )

e) A photoelectric cell is illuminated with white light (wavelengths from 400 nm to 700 nm). What is the maximum kinetic energy (in eV) of the electrons emitted by this surface if its work function is 2.30 eV ? (4 digit answer)

Expert Solution

genius_generous answered 2 years ago

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