Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls kjwtb6xw+:hs8(6a va on a photoelectric material but no electrons are emitted. Electrons may be em8(:6jswtbav6x a+k hwitted 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 Phot+ oy)yv:7,x z/amxc oyoelectric Effect Experiment and obtains the data dex: + /xmv,zo)yay7coypicted in the accompanying graph 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 frequency f behaves wghl;m zal563fg -9nsas 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 imje/bjx qjc+uqa h- / c6:n2h(s multiplied by the speed of light. The resulting value then is divided by three mete6xuhc/+mqca2(n ejj:b j q-h/rs. This final value 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 f.u7ntu i c9ny+ollowing wavelengths (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. it n97.yunc+u80 eV?

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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 maslp; s0doj8 5 9a6dcipgs $4.00\times10^{-26}kg$ 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 wavelengthmf.1le0hn.t 2+zry ybb iq i7; 250 nm shines onto a metallic surface. It is known that the electrons ejected from the surface range in speed t fqlr; e2.1iy.zhnmb+by 0 i7as 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,tp0f36 njg4hlctm8ssw, no4 5a ox6) v a stopping potential 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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