Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls on a photoelectric materiazdlg.rd p(tcz+w5/ m:l but no electrons are emittedmzgd+ z(.dr 5 pltc:/w. 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 Effectd ;t /, * qrl i2r)lvzfxjjb7b(fx4j(t Experiment and obtains the data depicted in the accompanytli;fqvbtj (jx (zrj/*4 2lx,7r) f bding 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 masocv/i4y.dr; ks 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 lighhaxc ;kmvj +y(s7jg;+ae, yb1t. The resulting value then is divided by three meters. This final value has the unitsasje x1 a7c,g(v y++jmb; h;yk 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 elej0y x )ratc5 k-jpo9f,w3 mug2ctromagnetic radiation will y0rkt up9o5 )j f3 mx-w2,gacjproduce 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 q:nr -x5/ bo jxf73j +ne/ylcmn *7tcuof 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 shinetxnd a7xu8a*c1 9gt1fs onto a metallic surface. It is known that the electrons ejected from the sfadcguan71 t9t x*81x urface range 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 experiment, a stopping potential ioas-sxx (0lo 3r(r(rof 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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