What determines the maximum velocity of the photoelectrons?

A photon electric surface has work function 2 eV. What is the maximum velocity of the photoelectrons ejected by light of wavelength 3,000Å .

Relation between the stopping potential V_0 and a metal and the maximum velocity of the photoelectrons is

Relation between the stopping potential V_0 of a metal and the maximum velocity of the photoelectrons is

Relation between the stopping potential V_0 of a metal and the maximum velocity of the photoelectrons is

If the power of the source of incident light is increased 4 times, by what factor would the maximum velocity of the photoelectron increase?

In a photoelectric experiment ,the maximum velocity of photoelectrons emitted

The maximum velocity of the photoelectrons emitted from the surface is v when light of frequency n falls on a metal surface. If the incident frequency is increased to 3n, the maximum velocity of the ejected photoelectrons will be