Photoelectric Effect - 题库网 (tiku.one)

1#

94.31: Light of a single frequency falls on a photoelectric material but vp;(ieeqfosb2b 1y2)hsz b.* no electrons v2.e f bzpq2(oy;esih*b b)1sare 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 Photoelectric Effect Experiment and obtains the ds :k b6g7qtt0j0axd)yata de)j:k7ytqbx0s d at0g 6picted 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 behaves as6tth q1;v7rm 4lm . qrnh10bfi 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 ox; eyelr2 t:7df light. The resulting value then is divided by three meter ye:7dtl ;ex2rs. 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 nmkhv ;0f l,q;gh) of electromagnetic radiation will produce photoelectrons of the least kinetic energy ,; khfqv;l 0ghif 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 of massq(+ e0s5 rmedhp49 )oot /;i jrnyqiw7 $4.00\times10^{-26}kg$ 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 surfacv)cu*3:tz/b)w gqilo e. It is known that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.8ctwob:)/zgl v 3)q *ui5× 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 potex f8wjzm19 7sqz5 g*phntial 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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