Physics

Problem

A photocell uses a metal of work function

2.2\,\text{eV}

. It is illuminated by monochromatic light that produces a stopping potential of

1.5\,\text{V}

. If the intensity of the light is doubled without changing its frequency, what will be the new stopping potential? a)

3.0\,\text{V}

1.5\,\text{V}

2.1\,\text{V}

2.2\,\text{V}