If Planck's constant is denoted by h and the charge by e, experiments on photoelectric effect allow the determination of

Options

A. only h
B. only e
C. only `h/e`
D. both h and e

Answer

C

Explanation

In photoelectric effect we cannot determine the values of h or e but we can determine the value of `h/e`. The slope of the graph of stopping potential `(V_(s))` against the frequency gives us the value of `h/e`.