The work function of a substance is

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

Problem

1.6\,\text{eV}

. The longest wavelength of light that can produce photoemission from the substance is (1)

7750\,\text{\AA}

(2)

3875\,\text{\AA}

(3)

5800\,\text{\AA}

(4)

2900\,\text{\AA}