Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls on a photoelectric material but no lw(m *60fcvdl electrons are emitted. Electrons mavc0l(m*w6 f dly be emitted if the:

A. frequency of the light is decreased.

B. frequency of the light is increased.

C. intensity of the light is decreased.

D. intensity of the light is increased.

E. velocity of the light is increased.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

97.36: A student performs the Photoelectric Effect Experiment and obtainsnybi l;s:ewu4ip .b,s js1h-1 the data depicted in the accompanying g1 ibnlp;bhsjue:4si.y -w 1,s raph of $E_{Km}$, the maximum kinetic energy of the photoelectrons in eV, versus f, the frequency of the photons in $10^{14}$ Hz. What is the approximate work function for this material?

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

96.28: A photon with frequentp- cuz2jbv81fw 2+dqcy f behaves as if it had a mass equal to:

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

14.32: Planck’s constant is multiplied by tel; gt0h8l 4wohe speed of light. The resulting value then is divided by three meters. This final to08e ;g hl4lwvalue has the units of which one of the following quantities?

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

10.48: Which of the following wavelengths ovb72 .ujo x9b(in nm) of electromagnetic radiation will produce photoelectrons of the least kinetic energy if the radiation is incident on a material with a work function of 4.80 eV?j.bxv 2b u9o7o

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.45: A stationary atom of kj4y.avc( ;.)uokutp mass $4.00\times10^{-26}kg$ spontaneously emits a photon of energy 10.0 eV. Which one of the following choices best represents the speed, in units of m/s, of the atom after emitting the photon?

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

16.45: Light of wavelength 250 nmvmh (h)4i (1hts ty.ar shines onto a metallic surface. It is known that the electrons ejecty as1t( )ih4r.m(hh tved from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is the work function of the surface?

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.46: In the photoelectric effect experiment, a stopping potentzi kkkjn 9pj 29x54l1vial of V_{stop}$ is needed when light of frequency $f_0$ shines on the electron-emitting metal surface. If the metal surface on which the light shines is replaced with a new material that has half the work function, what is the new stopping potential ???????????????? , for light of frequency $f_0$ shining on it?

A. $V_{new}\:>2V_{stop}$

B. $V_{new}\:=2V_{stop}$

C. $V_{stop}<V_{new}\:<2V_{stop}$

D. $V_{new}\:=V_{stop}$

E. It is indeterminate with the given information

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