Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequencyk 89lp(mmkx mzrg8thm /. wq1. falls on a photoelectric material but no electrons are emitted. Electrons may be emitted if thl.q.mwkhtr8kmz(/1 9 gm m8pxe:

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 Photoelectr:z+dyel37a u ric Effect Experiment and obtains the data depicted in the accomz r7dy3ul +ea:panying 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 acp5u;( 7hhi7rj d em o*ypsm,, 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 the speed of light. The rt cz( 05ovoz)cesulting value then is divided by three meters. This final value has the unitszcvzoc5(t o )0 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 electromagnetic ra - t ,f7z oy41)t:qfr)tn -fglhboas1sdiation will produce photoelectrons of the least kinetic energy if the radia)n: b)o 4gs7 -qotzy ,1rl1t-tafhsfftion 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 atoz/ +ajdavclo b,*a 4y +)zij0km of 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 metamp,57vla5(s kk0l,b/ea hxk c llic surface. It is known that the electrons ejected from the surface rek 5hva, /7k bc5xakls0(,pmlange 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 experimenw fstzsc55:acj6o07jzv*60)hsh gew t, 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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