SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In an experiment, photoelectric effect is observed in metal A when light with frequency (f ) falls on the metal. If the light frequency used in this experiment is doubled, the photoelectrons
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Will not be ejected
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Will be ejected as observed in the previous
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Will be ejected with greater number of photoelectrons
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Will be ejected with greater kinetic energy
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Explanation:
Detailed explanation-1: -The saturation photoelectric current is directly proportional to the intensity of incident radiation but it is independent of its frequency. Therefore the saturation photoelectric current becomes doubled, when both intensity and frequency of the incident light are doubled.
Detailed explanation-2: -Experiments showed that increasing the light frequency increased the kinetic energy of the photoelectrons, and increasing the light amplitude increased the current.
There is 1 question to complete.