Exam 27: Early Quantum Physics and the Photon

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The orbits of the electron in the Bohr model of the hydrogen atom are those in which the electron's _______________ is quantized in integral multiples of h/2 π\pi .

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What is the highest energy of a photon in the Balmer series?

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In a photoelectric effect experiment,the frequency of photons bombarding the surface is increased until photoelectrons just start to leave the surface.If this occurs at a frequency of 6.0 ×\times 1014 Hz,what is the work function of the surface?

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The number of electrons per second ejected from a metal in the photoelectric effect

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A photon of frequency 6.40 ×\times 1014 Hz has what energy?

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An x-ray photon of energy 3.20 ×\times 10-15 J has what wavelength?

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In the Compton effect a photon of wavelength λ\lambda and frequency f is scattered from and electron,initially at rest.In this process

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In a Compton scattering experiment,the scattered photon has a wavelength of 6.55 pm.If the scattering angle is 50 ∘^{\circ} ,what is the energy of the incident photon?

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An electron passing close to a target nucleus slows and radiates away some of its energy.What is the process called?

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The work function of a surface is 6.53 ×\times 10-19 J.What is this quantity in eV?

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Photons of energy 4.20 eV bombard a surface,which emits photoelectrons with kinetic energies for 0 to 1.80 eV. What is the threshold frequency for this surface?

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As a result of experiments involving alpha particle scattering,__________ proposed the nuclear model of the atom.

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What is the maximum wavelength photon that can produce a pair of tau particles (rest mass 1.777 GeV/c2) by pair production?

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The maximum shift in wavelength in Compton scattering is what multiple of the Compton wavelength (h/miss)?

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What is the wavelength of a photon emitted when an electron in hydrogen goes from the n = 4 state to the n = 1 state?

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Photons of red light cause a surface to emit photoelectrons with maximum kinetic energy K(red).If photons of blue light of the same intensity are now used in the experiment,which of the following statements is true about the photoelectrons emitted (if any are emitted)?

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Silver has a work function of 4.73 eV. Photons of threshold frequency would be described as which of the following?

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If a hydrogen atom in the ground state absorbs a 20.0 eV photon,what kinetic energy of the electron results?

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The spectra,such as Ångström found for low-pressure gas in a discharge tube,are of what type?

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Electrons are accelerated through a potential difference V and then strike a dense target.In the x-rays that are produced

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