Monochromatic light of frequency falls on a metal surface

PHYSICS · Single correct · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

Monochromatic light of frequency

8.0\times10^{14}\,\text{Hz}

falls on a metal surface. The stopping potential measured is

1.5\,\text{V}

. Calculate the work function of the metal in electron-volt. (Take

h = 6.63\times10^{-34}\,\text{J\,s}

e = 1.6\times10^{-19}\,\text{C}

.) (a)

1.5\,\text{eV}

(b)

1.8\,\text{eV}

(c)

3.3\,\text{eV}

(d)

4.8\,\text{eV}