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If a photoemissive surface has a thresho...

If a photoemissive surface has a threshold frequency of `3 xx 10^(14)` Hz, calculate the energy of the photons in eV.

Text Solution

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The correct Answer is:
`12.4 xx 10^(-5) eV`
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If a photoemissive surface has a threshold frequency of . 6 xx 10^(14)Hz , calculate the energy of the photons in eV. Given h=6.6 xx 10^(-34)Js .

A photon of frequency 5 xx 10^(14)Hz is incident on the surface of a metal. If the photoelectric thresh-old frequency for the metal is 3 xx 10^(14)Hz , Calculate the following Energy of the photon

Knowledge Check

  • A photon of energy 8 eV is incident on metal surface of threshold frequency 1.6 xx 10^(15) Hz , The maximum kinetic energy of the photoelectrons emitted ( in eV ) (Take h = 6 xx 10^(-34) Js ).

    A
    `1.6`
    B
    `6`
    C
    `2`
    D
    `1.2`

  • A photon of energy 8 eV is incident on a metal surface of threshold frequency 1.6 xx 10^(15) Hz , then the maximum kinetic energy of photoelectrons emitted is ( h = 6.6 xx 10^(-34) Js)

    A
    `4.8 eV`
    B
    `2.4 eV`
    C
    `1.4 eV`
    D
    `0.8 eV`

  • A photon of energy 8 eV is incident on a metal surface of threshold frequency 1.6xx10^(15)Hz . What is the K.E. of the ejected photoelectrons in eV ? [h=6xx10^(-34)Js]

    A
    6 eV
    B
    4 eV
    C
    2 eV
    D
    1 eV

    • Similar Questions

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    A photon of frequency 5 xx 10^(14)Hz is incident on the surface of a metal. If the photoelectric thresh-old frequency for the metal is 3 xx 10^(14)Hz , Calculate the following Photoelectric work function in eV

    The threshold frequency of a material is 2xx10^14 Hz. What is its work function in eV ?

    If the total energy of radiation of frequency 10^(14)Hz is 6.63J , calculate the number of photons in the radiation. (Planck's constant =6.63xx10^(-34)J-s ).

    For a clean metallic surface, it is known that its threshold frequency is 3.3 xx 10^14 Hz. Calculate the cutoff voltage for photoelectric emission if the light of frequency 8.2 xx 10^(14) Hz is incident on the same metallic surface. (Given h = 6.63 xx 10^(-34) J s)

    The effective mass of photon of frequency 5xx10^(14) Hz is

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