3. UV radiation photons with a wavelength of 3.45 x 10-7 m are incident on a metal surface in a vacuum. Photoelectric effect took place and electrons were instantaneously emitted from the surface with a maximum kinetic energy of 1.52 ev (electron-volt is another unit for energy, where 1 eV = 1.602 x 10-9). What is the Work Function, o of the unknown metal?

3. UV radiation photons with a wavelength of 3.45 x 10-7 m are incident on a metal surface in a vacuum. Photoelectric effect took place and electrons were instantaneously emitted from the surface with a maximum kinetic energy of 1.52 ev (electron-volt is another unit for energy, where 1 eV = 1.602 x 10-9). What is the Work Function, o of the unknown metal?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter29: Introduction To Quantum Physics

Section: Chapter Questions

Problem 9PE: UV radiation having a wavelength of 120 nm falls on gold metal, to which electrons are bound by 4.82...

See similar textbooks

Similar questions

What is the kinetic energy of an electron in a TEM having a 0.0100-nm wavelength?
(a) If the power output of a 650-kHz radio station is 50.0 kW, how many photons per second are produced? (b) If the radio waves are broadcast uniformly in all directions, find the number of photons per second per square meter at a distance of 100 km. Assume no reflection from the ground or absorption by the air.
How many x-ray photons per second are created by an x ray tube that produces a flux of x rays having a power of 1.00 W? Assume the average energy per photon is 75.0 keV.
UV radiation having a wavelength of 120 nm falls on gold metal, to which electrons are bound by 4.82 eV. What is the maximum kinetic energy of the ejected photoelectrons?
(a) Calculate the number of photoelectrons per second ejected from a 1.00-mm2 area of sodium metal by 500-nm M radiation having an intensity of 1.30 kW/m2 (the intensity of sunlight above the Earth's atmosphere). (b) Given that the binding energy is 2.28 eV, what power is carried away by the electrons? (c) The electrons carry away less power than brought in by the photons. Where does the other power go? How can it be recovered?
What is the wavelength of an electron accelerated through a 30.0-kV potential, as in a TV tube?
(a) What is the shortest-wavelength x-ray radiation that can be generated in an x-ray tube with an applied voltage of 50.0 kV? (b) Calculate the photon energy in eV. (c) Explain the relationship of the photon energy to the applied voltage.