Question

Which of the following statements are true for the photo-electric effect? (select true or false) The maximum energy of the ejected electrons is proportional to the intensity of the incoming photons The maximum energy of the ejected electrons varies linearly with the frequency of the incoming photons 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 velocity of the photons. Submit Answer Tries 0/6 Post Discussion Send Feedback

Answer 1

1.) False, it's not the maximum energy of ejected electron that depends upon the intensity of photon but it's the number of electron ejected that depends upon intensity of incident Photon.

2.) True. yes because the more the frequency more than energy and hence more is the maximum energy of electron

3.) True, because every electrons are bonded in the atom so they required some minimum energy to break the Bond and to get free. So there is a minimum frequency or say energy of photon that is necessary to to break the bond of electron from its atom

4.) False, it's incorrect because every Photon have the same velocity and that is equal to the speed of light. and maximum energy of ejected electron does not depend upon speed of light but it's depend upon the energy of a single Photon and hence depends upon the frequency of the incident ligh