An electron in a piece of aluminum requires at least 6.73e-19 J of energy to be ejected from the aluminum. What wavelength of EM radiation does this correspond to? If instead the electron in Problem #6 is struck by EM radiation with a wavelength of 205 nm, how much kinetic energy will it have upon leaving the aluminum? What is the final speed of the electron in Problem #7?

An electron in a piece of aluminum requires at least 6.73e-19 J of energy to be ejected from the aluminum. What wavelength of EM radiation does this correspond to? If instead the electron in Problem #6 is struck by EM radiation with a wavelength of 205 nm, how much kinetic energy will it have upon leaving the aluminum? What is the final speed of the electron in Problem #7?

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter5: Matter Waves

Section: Chapter Questions

Problem 37P

See similar textbooks

Similar questions

Check Your Understanding What is de Broglie’s wavelength of a non-relativistic proton with a kinetic energy of 1.0 eV?
What is the longest wavelength of radiation that can eject a hotoelectron from potassium, given the work function of potassium 2.24 eV? Is it in the visible range?
A 120-nm UV radiation illuminates a gold-plated electrode. What is the maximum kinetic energy of the ejected photoelectrons?
What is the wavelength of an electron accelerated from rest in a 30.0-kV potential difference?
Which has a greater momentum: an UV photon or an IR photon?
At what velocity will an electron have a wavelength of 1.00 m?
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?
An AM radio transmitter radiates 500 kW at a frequency of 760 kHz. How many photons per second does the emitter emit?
What is the de Brogue wavelength of a proton whose kinetic energy is 2.0 MeV? 10.0 MeV?
A carbon dioxide laser used in surgery emits infrared radiation with a wavelength of 10.6 µm . In 1.00 ms, this laser raised the temperature of 1.00 cm of flesh to and evaporated it. (a) How many photons were required? You may assume that flesh has the same heat of vaporization as water, (b) What was the minimum power output during the flash?
What is the maximum kinetic energy of photoelectrons ejected from sodium by the incident radiation of wavelength 450 nm?
Check Your Understanding Cut-off frequency for the photoelectric effect in some materials is 8.01013 Hz. When the incident light has a frequency of 121014 Hz. the stopping potential is measured as -0.16 V. Estimate a value of Planck’s constant from these data (in units J • s and eV • s ) and determine the percentage error of your estimation.