Light of frequency `v` is incident on a certain photoelectric substance with threshold frequency `v`. The work function for the substance is

Light of frequency v is incident on a substance of threshold frequency v(v lt v) . The energy of the emitted photo-electron will be

A photon of frequency v is incident on a metal surface whose threshold frequency is v_(0) . The kinetic energy of the emitted photoelectrons will be

Light of frequency .25 v_0 is incident on a metal surface of threshold frequency 2 v_0 . If its frequency is halved and intensity is made three times then find the new value of photoelectric current.

Light of frequency 4 v_(0) is incident on the metal of the threshold frequency v_(0) . The maximum kinetic energy of the emitted photoelectrons is

Light of frequency 4nu_0 is incident on the metal of the threshold frequency nu_0 . The maximum kinetic energy of the emitted photoelectric is

One metal sphere of radius r of material with threshold frequency v_0 is kept isolated and light of frequency v is incident on it. Frequency of the incident light is more than the threshold frequency of material. Find the maximum number of electrons which can be emitted from the sphere.

Draw a graph to show the dependence of stopping potential on the frequency of incident light in case of photoelectric effect. Indicate the threshold frequency in the graph.

Write down the relation between threshold frequency and photoelectric work function for a metal.