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

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

Two metals X and Y have work functions 2eV and 5eV respectively. Which metal will emit electrons when it is irradiated with light of wavelenth 400 nm and why?

Two metals X and Y have work functions 2eV and 5eV respectively. Which metal will emit electrons, when irradiated with light of wavelength 400m, and why?

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

Three photo diodes D_1 , D_2 and D_3 are made of semiconductors having band gaps of 2.5 eV, 2eV and 3eV, respectively. Which ones will be able to detect light of wavelength 6000 oversetcircA ?

Photons of frequency v are incident on the surfaces of two metals A and B of threshold frequencies 3/4v and 2/3 v respectively. The ratio of the maximum kinetic energy of electrons emitted from A to B is

A metal has work function 5eV. Will this metal emit electrons, when light of wavelength 400 nm falls on it?

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?