A metal has work function 6 eV. Will this metal emit electrons, when light of wavelength 400 nm falls on it ?

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

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?

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?

The work function of a certain metal is 4.2 eV. Will this metal give photoelectric emission for incident radiation of wavelength 330 nm?