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In an experiment on photoelectic effect,...

In an experiment on photoelectic effect, the graph as shown in fig. were obtained between the photoelectric current (I) and the anode potential (V). Name the characterstic of the incident radiation that was kept constant in this experiment.

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As the value of stopping potential is same for all the curves, so the frequency of incident radiations is kept constant but their intensity is different.
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Knowledge Check

  • In photoelectric effect experiment, on increasing the intensity of incident light the photoelectric current

    A
    increases
    B
    decreases
    C
    remains constant
    D
    first decrease and then increase constant

  • In photoelectric effect , the curve between photoelectric current and anode potential V (for different frequencies ) is shown in figure , then

    A
    `v_(1) gt v_(2) gt v_(3)`
    B
    `v_(1) lt v_(2) lt v_(3)`
    C
    `v_(1) = v_(2) = v_(3)`
    D
    `v_(1) gt v_(2) lt v_(3)`

  • In a photoelectric experiment, the reciprocal of the slope of the straight line graph giving the relation between the stopping potential and the frequency of incident radiation gives

    A
    h
    B
    e
    C
    `h/e`
    D
    `e/h`

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