A) Photoconductive effect B) Compton effect C) Photovoltaic effect D) Photoelectric effect
A) Photoelectrons B) Core electrons C) Valence electrons D) Conduction electrons
A) Electromagnetism B) Quantum chemistry C) Thermodynamics D) Classical mechanics
A) Not affect electrons at all B) Dislodge electrons only above a certain frequency C) Transfer energy continuously, leading to electron emission when enough energy accumulates D) Transfer energy in discrete packets
A) Light does not interact with electrons B) Light consists of discrete energy packets called photons C) Light is a continuous wave D) Light's energy accumulates over time from a continuous wave
A) Stopping frequency B) Saturation frequency C) Threshold frequency D) Cut off frequency
A) The kinetic energy decreases B) The kinetic energy remains the same C) The maximum kinetic energy of the emitted electrons increases D) The kinetic energy becomes zero
A) Increases the rate at which electrons are ejected B) Does not affect the rate at which electrons are ejected C) Decreases the rate at which electrons are ejected D) Decreases the kinetic energy of the photoelectrons
A) More than 10−3 second B) Less than 10−9 second C) More than 1 second D) Exactly 1 second
A) X-ray diffraction B) Mass spectrometry C) Angle-resolved photoemission spectroscopy D) Nuclear magnetic resonance
A) Insulators B) Semiconductors C) Metals and other conductors D) Gases
A) Stopping potential or cut off potential B) Threshold potential C) Peak potential D) Saturation potential
A) eVo = I B) eVo = f C) eVo = Vo D) eVo = Kmax
A) Increases the energy barrier to photoemission B) Eliminates the energy barrier C) Has no effect on the energy barrier D) Decreases the energy barrier to photoemission
A) Vacuum photoemission B) External photoemission C) Surface photoemission D) Internal photoemission
A) Vacuum photoemission B) External photoemission C) Internal photoemission D) Surface photoemission
A) The kinetic energy remains the same B) The kinetic energy decreases C) The kinetic energy becomes zero D) The kinetic energy increases
A) The stopping voltage decreases B) The stopping voltage becomes zero C) The stopping voltage remains the same D) The stopping voltage has to increase
A) The stopping voltage becomes zero B) The stopping voltage increases C) The stopping voltage decreases D) The stopping voltage remains the same
A) Dependent only on the frequency of light B) Dependent on the emitting material's quantum properties C) Independent of the emitting material's quantum properties D) Dependent only on the intensity of light
A) Has no effect on the amount of UV B) Alters the amount of UV C) Increases the amount of UV D) Decreases the amount of UV
A) Incandescent bulbs B) Halogen lamps C) LEDs D) Xenon arc lamps
A) LEDs B) Xenon arc lamps C) Fluorescent lamps D) Incandescent bulbs
A) Ultraviolet lasers and synchrotron radiation B) Microwave lasers and synchrotron radiation C) Infrared lasers and synchrotron radiation D) Gamma-ray lasers and synchrotron radiation
A) A fluctuating external voltage B) A negative external voltage C) A positive external voltage D) No external voltage
A) The photoelectric current increases B) The photoelectric current decreases C) The photoelectric current remains the same D) The photoelectric current becomes zero
A) Exponential B) Linear C) Sigmoidal D) Parabolic
A) Does not affect the photoelectric current B) Decreases the photoelectric current C) Increases the photoelectric current D) Makes the photoelectric current zero
A) Increases the number of electrons reaching the collector B) Allows all electrons to reach the collector C) Prevents all but the highest-energy electrons from reaching the collector D) Does not affect the electrons reaching the collector
A) It is a function of light frequency B) It is a function of light intensity C) It is a function of photon energy D) It is independent of photon energy
A) It measures angular distributions to infer material properties B) It measures energy distributions to infer material properties C) It measures intensity distributions to infer material properties D) It measures frequency distributions to infer material properties
A) Niels Bohr B) Max Planck C) Erwin Schrödinger D) Albert Einstein
A) The Planck constant B) The Schrödinger constant C) The Einstein constant D) The Bohr constant
A) K_max = W - hν B) K_max = hν - W C) K_max = hν / W D) K_max = hν + W
A) V_o = (h/e)(ν + ν_o) B) V_o = (h/e)(ν_o - ν) C) V_o = (h/e)(ν - ν_o) D) V_o = (h/e)(ν / ν_o)
A) Alexandre Edmond Becquerel B) Heinrich Hertz C) Willoughby Smith D) Johann Elster
A) 1897 B) 1887 C) 1839 D) 1873
A) Wilhelm Hallwachs B) J. J. Thomson C) Heinrich Hertz D) Philipp Lenard
A) Max Planck B) J. J. Thomson C) Albert Einstein D) Lenard
A) 1900 B) 1914 C) 1905 D) 1921
A) Max Planck B) Robert A. Millikan C) Georgi Nadjakov D) Albert Einstein
A) Gilbert N. Lewis B) Robert A. Millikan C) Max Planck D) Albert Einstein
A) The photoelectret state in dielectrics. B) The quantization of light energy. C) The wave-particle duality of light. D) The photoelectric effect in gases.
A) 1 femtosecond B) 20 attoseconds C) 45 attoseconds D) 100 attoseconds
A) Plasma screens B) Liquid crystal displays C) Video camera tubes like the Image dissector D) Cathode ray tubes
A) Ultraviolet region B) Visible light region C) Infrared region D) Gamma-ray region
A) Copper B) Lead C) Iron D) Aluminum
A) σ_pe + σ_compton B) σ_pe + σ_pp C) σ_compton + σ_pp D) σ_pe + σ_compton + σ_pp
A) Photoelectric effect B) Thermal absorption C) Compton scattering D) Pair production
A) Below 1 MeV B) Above 0.5 MeV C) Below 0.5 MeV D) Above 1.022 MeV
A) Pair production B) Thermal absorption C) Photoelectric absorption D) Compton scattering |