Biology Forums - Study Force

Which of the following devices make use of the photoelectric effect?
 a. digital cameras
  b. photocopiers
  c. laser printers
  d. solar cells
  e. all of the above

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[Ques. 2] The person who first explained the photoelectric effect was
 a. Max Planck
  b. Albert Einstein
  c. Neils Bohr
  d. Erwin Schroedinger
  e. Werner Heisenberg

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[Ques. 3] What quantities are plotted on a blackbody radiation curve?
 a. total radiated energy vs. temperature
  b. radiation intensity vs. wavelength
  c. wavelength of peak emission vs. temperature
  d. none of the above

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[Ques. 4] The person who first explained the blackbody spectrum was
 a. Max Planck
  b. Albert Einstein
  c. Neils Bohr
  d. Erwin Schroedinger
  e. Werner Heisenberg

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[Ques. 5] The quantity that is quantized in the oscillating atoms of a blackbody is
 a. angular momentum
  b. energy
  c. the emission spectrum
  d. the absorption spectrum
  e. the wave function

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[Ques. 6] What is coherent light?
 a. light of a single wavelength
  b. light that is all in phase
  c. light that is polarized in one direction
  d. none of the above

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[Ques. 7] Which of these is not involved in the operation of lasers?
 a. stimulated emission c. metastable state
  b. population inversion d. blackbody radiation

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[Ques. 8] A three dimensional image made using a laser is a(n)
 a. emission spectrum
  b. absorption spectrum
  c. wave function
  d. hologram
  e. photoelectric effect

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[Ques. 9] Electron diffraction shows
 a. that electrons behave like waves
  b. the photoelectric effect
  c. characteristic x ray spectra
  d. that electrons in atoms have only certain allowed energies

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[Ques. 10] If the speed of an electron increases, its de Broglie wavelength
 a. increases c. stays the same
  b. decreases d. may increase or decrease

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Easily the best answer :lol:

If so, mark it solved 8-)