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The number of photo - electrons emitted ...

The number of photo - electrons emitted per second from a metal surface increases when

A

The energy of incident photons increases

B

The frequency of incident light increases

C

The wavelength of the incident light increases

D

The intensity of the incident light increases

Text Solution

Verified by Experts

The correct Answer is:
D
Intensity `prop` ( No. of photons) `prop` (No. of photoelectrons)
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Knowledge Check

  • 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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    Are all at rest
    B
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    A
    `2.0 xx10^(11)`
    B
    `4.78xx10^(11)`
    C
    `2.8 xx10^(11)`
    D
    `3.6xx10^(11)`

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