Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency fak u:,2 bbzp/-ufvjdn:lls on a photoelectric material but no electrons are emitted. Electrons may be ej,2 fpb - :zubvnu:dk/mitted 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 perlt41io/7gb; ;s ugqroforms the Photoelectric Effect Experiment and obtains the data depicted in the accompanying graph ;ostg uqb;4 g/rl7o1iof $E_{Km}$, 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 fbu bx1q/uh(a8ed(e d0 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 multiplied by the speed of light. The resulting va swc9x xnucqaqx01.l9g2 02ailue then is dividsc x90 axl wixcg1nuq 2qa2.09ed by three meters. 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 following wavelengths (in nm yyn4j gxjs.)kt/ om8,) of electromagnetic radiation will produce photoelecjtyn)mg. /ko, sj4yx8trons 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 oh0 dyyr7(8dl:79yuf l-v h2*qvbudz2gaivv (f 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 knownwqs/m 7e-o 4*:gn0dvrlez7x-qn u+fy that the electrons ejected from the surface range in speed asr-q:-vodz lu g em7q/f *4nsxye7n+ 0w 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 sktf./s 3w,0d aucnh)w topping 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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