Which of the following statements are true for the photo-electric effect? (selec

Question

Which of the following statements are true for the photo-electric effect? (select true or false)

The frequency of the photons must be larger than a certain minimum value in order to eject electrons from the metal.
The maximum energy of the ejected electrons is proportional to the intensity of the incoming photons.
The maximum energy of the ejected electrons is proportional to the velocity of the photons.
The maximum energy of the ejected electrons varies linearly with the frequency of the incoming photons.

Explanation / Answer

only 1 &4 are true 1) true 4)true

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