The work function of Al is 4.2 eV. Find the W.L . Of the incident light if the photo current is brought to zero by a stopping potential of 0.80 eV.

The work function of caesium is 2.14 eV . Find The wavelength of incident light if the photo current is brought to zero by stopping potential of 0.60 V.

The work function of caesium is 2.14 eV . Find Threshold frequency for caesium

If maximum K.E. of electron emitted by a photo cell is 4 eV, what is the stopping potential?

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

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