Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls on a photoelectric m3 5p+wzp xwa5daterial but no electrons are emitted. +wx5 pd5pawz3 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 obtaesq -b)us226(vxa *c8mygjf y ins the data depicted in the accompany s j)evuy6m2- c2(y*x8fbqagsing 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 f yw 7nr3f*jet;requency 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 multipl;iex9n8 vntm,ied by the speed of light. The resulting value then is divided by three meters. This final value has the units o8vt; ixe mnn,9f 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 electromagnahzfoo6wfvs;,: (mh 3mu /xz1 etic 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?u:f h zs /f1(oahm,6o mx;z3vw

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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 *vh)6d -h0emer qbsp1mass $4.00\times10^{-26}kg$ 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 mf bdv ho;*yq)n+1:jmuetallic surface. It is known that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4yfb: )1oum dqnj+;*hv.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 experime;r7 gzj *zeke+nt, 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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