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The electrons are emitted in the photoel...

The electrons are emitted in the photoelectricm effect from a metal surface

A

Only if the frequency of radiation is above a certain threshold value.

B

Only if the temperature of the surface is high.

C

at a rate that is independent of the nature of metal

D

with a maximum velocity proportional to the frequency of incident radiation.

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The correct Answer is:
A
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Knowledge Check

  • The electrons are emitted in the photoelectric effect from a metal surface

    A
    only if the frequency of the incident radiation is above a certain threshold value
    B
    only if the temperature of the surface is high
    C
    at the rate of independent of the nature of the metal
    D
    none of these

  • The electrons are emitted in a photoelectric effect from a metal surface

    A
    only if the frequency of radiation is above a certain threshold value
    B
    only if the temperature of surface is low
    C
    at a rate that is independent of the nature of metal
    D
    with a maximum velocity proportional to the frequency of incident radiation .

  • The photoelectrons emitted from a metal surface:

    A
    Are all at rest
    B
    Have the same kinetic energy
    C
    Have the same momentum
    D
    Have speeds varying from zero up to certain maximum value

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    The radiation emitted by an electronic transition from n=3 to n=2 in a hydrogen atom is used to induce photoelectric effect on a metal surface. Find the work function (in eV0 of the surface, if the maximum kinetic energy of ejected electrons is measured tobe 1.376xx10^(-19)J

    In the photoeletric effect, electrons are emitted

    The photoelectrons emitted from a metal surface:

    Photoelectrons emitted from a metallic surface are

    Kinetic energy of electrons emitted in photoelectric effect is

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