The work function of metal A is higher than the work function of metal B. which of these metals has higher threshold wavelength?

Two metals A and B have work functions 4eV and 10eV respectively. Which metal has higher threshold wavelength?

Two metal A and B have work functions, 2eV and 5eV respectively. Which metal has lower threshold wavelength?

Define work function of metal and photoelectric effect.

Define the photoelectric work function of a metal..

Define the term work function of a metal. The threshold frequency of a metal is 2f_0 is incident on the metal plate, the maximum velocity of electrons emitted is v_1 , when the frequency of the incident radiation is increased of 5f_0 the maximum velocity of electrons emitted is v_2 . Find the ratio of v_1 to v_2 .

Photoelectric effect When light of sufficiently small wavelength is incident on a metal cathode, it may emit electsons called photoelectrons. This is called photoelectric effect. Above threshold frequency, the stopping potential and hence the energy of the photoelectrons is directly proportional to the frequency. In the given figure, we see the variation of stopping potential with the frquency of incident radiation for three metals A, B and C Which metal has the largest threshold wavelength?