Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls on a photoelectric materia6ddb8dhdx d9,l but no electrons are em xd6dhd ,ddb89itted. Electrons may 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 obtains t:v)aln) 2 plhxj zc3: xle4o(vhe data depicted in the accompanying graph nh(c:el)4a v )xlxpj2zo l3: vof $E_{Km}$, 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 beh r;7 t5m8q rfmpo 6 )9xjdfz7a9sq5riyaves 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 qwzuj .f+;jny9t e y0.the speed of light. The resulting value then is divided by three meters. This final value has the units of which one of the following qujwt. neyy+9q.jufz;0 antities?

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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 (in nm) of electromagnetic radiativds vi;kn*1lx q b98h;;4nepgon will produce photoelectrons of the least kinetic energy if the radiation is incident on a materia49ih1v d;n ; bv; sgxnp*qe8kll with a work function of 4.80 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 ma2bi 7f :i,uqc- kgot:nss $4.00\times10^{-26}kg$ 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 nonbql--3kt o9j 3;y kum shines onto a metallic surface. It is known that the electrons ejected from the surface range in sp k3blqyo3okt-n;- j u9eed 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 potent)* h9xqdf 4r*rcnzm n2ial 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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