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?

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?

Sketch a graphs showing the variation of stopping potential with frequency of incident radiations for two photosensitive materials A and B having threshold frequencies v_0>v_0' respectively? Which of the two metals A or B has higher work function?

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

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 ?