The work function of potassium is

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

Problem

2.3\,\text{eV}

. Calculate the stopping potential when monochromatic light of wavelength

400\,\text{nm}

is incident on the surface. (a)

3.1\,\text{V}

(b)

0.5\,\text{V}

(c)

0.8\,\text{V}

(d)

2.3\,\text{V}