A photocell stoops emission if it is maintained at `2 V` negative potential . The energy of most energetic photoelectron is

At stopping potential, the kinetic energy of emitted photoelectron is

In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding stopping potential is

In photoelectric emission process from a metal of work function 1.8eV , the kinetic energy of most energetic electrons is 0.5eV . The corresponding stopping potential is:

In photoelectric emission process from a metal of work function 1.8 eV , the kinetic energy of most energetic electrons is 0.5 eV . The corresponding stopping potential is

In photoelectric emission process from a metal of work function 1.8 eV , the kinetic energy of most energetic electrons is 0.5 eV . The corresponding stopping potential is

Can kinetic energy of a body by negative ? Potential energy be negative ?

If light of wavelength 6200Å falls on a photosensitive surface of work function 2 eV, the kinetic energy of the most energetic photoelectron will be

Negative gradient of potential energy gives

Radiations of frequencies v_2 and v_2 are made to fall in turn, on a photosenstive surface. The stopping potential required for stopping the most energetic photoelectrons in the two cases are V_1 and V_2 respectively. Obtain a formula for determining the threshold freqeuncy in terms of these parameters.