Electrons are used to produce X-rays by allowing a beam of electrons to strike a heavy metal surface. What is true about the wavelengths of the characteristic X-rays that are produced in such a situation?
A. There is a continuous range of wavelengths produced, up to a maximum that depends on the energy of the electron beam used.
B. There is a single wavelength of X-ray produced that depends on the energy of the electron beam used.
C. There are a few specific wavelengths that are produced for a given metal and their wavelength is independent of the energy of the electron beam used.
D. There is a continuous range of wavelengths produced, down to a minimum that depends on the energy of the electron beam used.
C. There are a few specific wavelengths that are produced for a given metal and their wavelength is independent of the energy of the electron beam used.
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A photon scatters off of a stationary electron. Which of the following statements about the photon are true? (There could be more than one correct choice.)
A) Its wavelength increases due to the scattering. B) Its frequency increases due to the scattering. C) Its wavelength decreases due to the scattering. D) Its frequency decreases due to the scattering. E) Its energy does not change.
On the Kelvin temperature scale, a body's temperature is directly related to its ________.
A. kinetic energy due to its motion through space B. mass C. internal energy content D. kinetic energy due to rotation E. None of these choices are correct.
What is the maximum kinetic energy (in eV) of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?
a. 1.9 b. 1.2 c. 3.1 d. zero e. 6.2
The study of the origin, large-scale structure, and future of the universe is termed