Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single freque99:mr)wo2dncdt 9 u i:ht yqx(ncy falls on a photoelectric material but no electrons areuiw n29 dhd:9c)om(trt:xyq9 emitted. 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 Phoz:3 ew9tnje hz( .gb-qtoelectric Effect Experiment and obtains the data depicte-e.zjw:zh q 9( g3bnted 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 behaveso8p8y/eb ts2 2sxv7; iyr5 x+kb3n pjz 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 ligh4 jyisheu-j 1ceci ab 8;.o-x5t. The resulting value then is divided by three meters. This final value has the units of which one of the following qu4--5cbs y; ax j ihje18c.oiueantities?

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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 radiation ,sx 8 9/m,x-ztxzy (avzz+scdwill produce photoelectrons of the least kinetic energy if the s-x(cxm8dya +t9z/s,z xz,vzradiation 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 of p 58 6.cgar8iynw8io ymass $4.00\times10^{-26}kg$ 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 surfaca60;py t/5ch za4v qoqe. It is known that the electrons ejected from the suav ta4 qoh;p5cyz6/q0rface 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 effez8wmh g)06dle ..y) duzwjok* /c fw5uct 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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