Question
When two monochromatic lights of frequency, v and ${v \over 2}$ are incident on a photoelectric metal, their stopping potential becomes ${{{V_s}} \over 2}$ and Vs respectively. The threshold frequency for this metal is
When two monochromatic lights of frequency, v and ${v \over 2}$ are incident on a photoelectric metal, their stopping potential becomes ${{{V_s}} \over 2}$ and Vs respectively. The threshold frequency for this metal is