Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls on a photoelak- gm:6xdqpto,0he) ectric material but no electrons are emitted. eq,ot:- kdp hx)g0am 6Electrons 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 andffpy31v 7z tipc8k f/1 obtains the da ptf31 y /i8z7kvpffc1ta depicted 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 as if it had a masy;;m5)jpc. x.d px duls 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 the speed of lf0-no479c3wlv6gqyeo2e n t0m z1 kwv ight. The resulting value then is divided by three meters. This final valuezo0lf4oq 6n nv9cgt321v0e- ymwk 7we 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 (in nm) of eifa :wc rcj tv9257yix nx g.d90kb)i)lectromagnetic radiation wil7f gix59a)c:r j 2vik0i 9x)tybwd.cn l produce photoelectrons of the least kinetic energy if the radiation is incident on a material 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 ofcxh;l; z 26kwy71a wlr 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 nm shines onto a metallic surface. It is e10 l8r ;3mp qtvf5vkmknown that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is the work function of the surfacerm e q30m8tklvvf1p5;?

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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 photoelectrzjxn9o)ytpj/87c+q 7 ba 7 bsric effect experiment, 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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