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If the work function of a metal is 'phi'...

If the work function of a metal is `'phi'` and the frequency of the incident light is `'v'`, there is no emission of photoelectron if

A

`vltphi/h`

B

`v=phi/h`

C

`vgtphi/h`

D

`vgephi/h`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The work function of a metal is 4 eV. What should be the wavelength of the incident radiation for the emission of photoelectrons of zero velocity ?

    A
    2500 Å
    B
    3100 Å
    C
    3500 Å
    D
    3800 Å

  • When the frequency of the incident radiation on a metallic plate is doubled, KE of the photoelectrons will be

    A
    doubled
    B
    halved
    C
    more than doubled
    D
    increases but less than doubled.

  • When the frequency of incident radiation on a metallic plate is doubled, KE of photoelectron will be

    A
    doubled
    B
    halved
    C
    more than double
    D
    increases but less than double.

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