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The threshold frequency of a material is...

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

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To find the work function of the material in electron volts (eV) given its threshold frequency, we can follow these steps: ### Step 1: Understand the relationship between frequency and work function The work function (Φ) is related to the threshold frequency (ν₀) by the equation: \[ Φ = hν₀ \] where: ...
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The threshold freqeuncy of a certain metal is 3.3xx10^(14)Hz . If light of frequency 8.2xx10^(4)Hz is incident on the metal, predict the cut off voltage for photoelectric emission. Given Planck's constant, h=6.62xx10^(-34)Js .

Knowledge Check

  • The threshold frequency for a photosensitive metal is 3xx10^(14)Hz . The work function of the metal is approximately equal to [h=6.66xx10^(-34)Js]

    A
    `0.5xx10^(-19)` J
    B
    `1.0xx10^(-19)`J
    C
    `1.5xx10^(-19)J`
    D
    `2.0xx10^(-19)J`

  • The frequency of an electromagnetic radiation is 2xx10^6 Hz. What is its wavelength in metres (Velocity of light = 3xx10^8 ms^(-1) )

    A
    `6.0xx10^14`
    B
    `1.5xx10^4`
    C
    `1.5xx10^2`
    D
    `0.66xx10^(-2)`

  • The light radiation of wavelength 6000 Å falls on a metal . The threshold frequency of a metal surface is 4 xx 10^(14) Hz . The maximum velocity of the emitted photoelectrons is

    A
    `3.0 xx 10^(5) ` m/s
    B
    `3.8 xx 10^(-5)` m/s
    C
    `3.8 xx 10^(5) ` m/s
    D
    `8.3 xx 10^(5)` m/s

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    Calculate the threshold frequency of a photon from a photosensitive surface of work function 0.2 eV . Take h=6.6xx10^(-34)Js.

    The minimum frequency for photoelectric effect on a metal is 7xx10^(14) Hz, Find the work function of the metal.

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

    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

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