Mark the incorrect statement regarding the photoelectric effect

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There is no time lag between the striking of light beam and the ejection of election of electrons from the metal surface

The kinetic energy of the electrons increases with increase in frequency of light used

The number of electrons ejected is inversely proportional to the intensity of light

Photoelectric effect is not observed below threshold frequency

answer is B.

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Detailed Solution

the true facts about photoelectric effect

1.There is no time lag between the striking of light beam and the ejection of election of electrons from the metal surface

2.The number of electrons ejected is directly proportional to the intensity of light.

3.Photoelectric effect is not observed below threshold frequency

4.The kinetic energy of the electrons increases with increase in frequency of light used

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