A beam of light falling on a metal surface is causing electrons to be ejected from the surface.If we now double the frequency of the light,which of the following statements are correct? (There could be more than one correct choice. )
A)The kinetic energy of the ejected electrons doubles.
B)The speed of the ejected electrons doubles.
C)The number of electrons ejected per second doubles.
D)Twice as many photons hit the metal surface as before.
E)None of the above things occur.

Question

Quizplus · Accepted Answer

Doubling the frequency of light increases the energy of each photon, which increases the kinetic energy of the ejected electrons, but not necessarily doubling it. The number of ejected electrons depends on the intensity, not frequency.

A Beam of Light Falling on a Metal Surface Is