Explain the nature of the graph obtained when stopping potential is plotted against…
PHYSICS · Multi-part · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter
Problem
Explain the nature of the graph obtained when stopping potential V0 is plotted against the frequency ν of incident light for a metal surface.
(a) Starting from Einstein’s photoelectric equation, derive the mathematical relation between V0 and ν.
(b) Hence state which physical quantity determines the slope of the graph and which property of the metal decides the intercept on the frequency axis.
(c) Sketch qualitatively how the graph changes if a metal of smaller work function is used under otherwise identical experimental conditions.