For a certain metal

PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation

Problem

For a certain metal, the threshold frequency is

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

. When light of frequency

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

is incident on it, the measured stopping potential is

2.5\,\text{V}

. Calculate the stopping potential when the frequency of the incident light is increased to

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

, the intensity remaining the same.