The photoelectric work function of potassium is

PHYSICS · Multi-part · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

2.3\,\text{eV}

. If light of wavelength

2800\,\text{\AA}

falls on potassium, find: (a) The kinetic energy, in electron volts, of the most energetic electrons ejected. (b) The stopping potential, in volts.