The work function for a Palladium metal plate on a PCB board of a detector is 5.22 eV. A. Compute the energy, in units of Joules, that is required to remove an electron from the plate B. Compute the KE and speed of and electron hit by a photon of wavelength 75 nm C. Compute the speed of the ejected electron if the wavelength of the photon is 265 nm (J) and (m/s) (1). (m/s)

The work function for a Palladium metal plate on a PCB board of a detector is 5.22 eV. A. Compute the energy, in units of Joules, that is required to remove an electron from the plate B. Compute the KE and speed of and electron hit by a photon of wavelength 75 nm C. Compute the speed of the ejected electron if the wavelength of the photon is 265 nm (J) and (m/s) (1). (m/s)

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 66P: The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as...

See similar textbooks

Similar questions

Experiments are performed with ultra-cold neutrons having velocities as small as 1.00 m/s. (a) What is the wavelength of such a neutron? (b) What is its kinetic energy in eV?
The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as photoelectrode? What is the stopping potential when for the emitted electrons when this photo electrode is exposed to radiation of frequency 1200 THz?
An X-ray tube has an applied voltage of 100 kV. (a) What is the most energetic X-ray photon it can produce? Express your answer in electron volts and joules. (b) Find the wavelength of such an X-ray.
A 900-W microwave generator in an oven generates energy quanta of frequency 2560 MHz. (a) How many energy quanta does it emit per second? (b) How many energy quanta must be absorbed by a pasta dish placed in the radiation cavity to increase its temperature by 45.0 K? Assume that the dish has a mass of 0.5 kg and that its specific heat is 0.9 kcal/kg • K. (c) Assume that all energy quanta emitted by the generator are absorbed by the pasta dish. How long must we wait until the dish in (b) is ready?
Help Me
A photon with wavelength X scatters off an electron at rest, at an angle with the incident direction. The Compton wavelength of the electron Ac = 0.0024 nm. a) For λ = 0.0006 nm and 0 = 53 degrees, find the wavelength X' of the scattered photon in nanometres. b) Obtain a formula for the energy of the electron Ee after collision, in terms of the universal constants h, c and the variables X, X' and Ac. The answer must be expressed in terms of these variables only. (Please enter an algebraic expression using latex format; do not input any numerical values) c) Using the energy conservation condition, find the value of the electron energy Ee after scattering in units of keV. d) Write an algebraic expression for the electron's momentum pe in terms of its energy Ee, its mass me and the speed of light c. e) What is the de Broglie wavelength of the scattered electron ? Express your answer in terms of Ee, me, and X and c. f) Find the value of the de Broglie wavelength of the scattered electron…
If a photon of wavelength 0.0665 nm hits a free electron and is scattered at an angle of 35◦ from its original direction, findat. the change in wavelength of this photon,b. the wavelength of the scattered photon,vs. the change in energy of the photon (is it a loss or a gain?), and d. the energy gained by the electron.
Consider a photon with wavelength 0.011 nm. l = 0.011 nm What is the momentum of the photon in kg m/s? What is its energy in MeV?
A visible (violet) emission spectral line for chromium (Cr) occurs at wavelength λ = 425.435 nm. A) What is the frequency (ν) of this light?(Give correct units and answer to six significant figures.) B) What is the magnitude of the energy change associated with the emission of one mole of photons of light with this wavelength?
In a photoelectric effect experiment, it is found that no current flows unless the incident light has a wavelength shorter than 359 nm nm. What stopping potential will be needed to halt the current if light of 225 nm falls on the surface? Express your answer with the appropriate units. μA 2.249 V Vo =
The work function of aluminum is 4.26 ev. What is the maximum velocity of an electron emitted from aluminum after the absorption of a photon of wavelength 117 nm. Give your answer in m/s. Round your answer to 2 decimal places. Add your answer Question 10 A photon Compton scatters from an electron. At what scattering angle for the photon will the electron acquire the largest kinetic energy? 45 degrees 90 degrees C o degress D 180 degrees
A visible (violet) emission spectral line for chromium (Cr) occurs at wavelength λ = 425.435 nm.What is the frequency (ν) of this light?(Mind the units carefully. Give your answers to six significant figures.)What is the magnitude of the energy change associated with the emission of one mole of photons of light with this wavelength?