Define work function of a metal.

The work function of a metal is 3.45 eV. Calculate what should be the maximum wave length of a photon that can eject photo - electron from the metal.

The work function of a metallic surface is 2.5 eV. Ultraviolet light of wavelength 2000Å is allowed to be incident on the metallic surface. Calculate Stopping potential. (Given Planck's constant h = 6.63 xx 10^(-34) J-s , electronic charge e = 1.6 xx 10^(-19) C, electron mass m = 9.1 xx 10^( -31) kg

How does the maximum K.E. of electron emitted vary with work function of the metal?

If the work function of two metals X and Y are 4.17eV and 8.24x10^(-19) J respectively, then for which metal lesser amount of energy will be required to emit an electron?

The working function for a certain metal is 4.2ev. Will these metal give photoelectric emision for incident radiation of wave length 330 nm.