Physics

Problem

A student determines the slope of the

V_0

versus

\nu

plot for a metallic surface as

(4.2\pm0.2)\times10^{-15}\,\text{V\,s}

. Taking the elementary charge as

1.6\times10^{-19}\,\text{C}

(exact for this calculation), which of the following values for Planck constant

h

with its absolute uncertainty most nearly matches the result? a)

(6.4\pm0.3)\times10^{-34}\,\text{J\,s}

(6.7\pm0.3)\times10^{-34}\,\text{J\,s}

(6.7\pm0.1)\times10^{-34}\,\text{J\,s}

(7.0\pm0.3)\times10^{-34}\,\text{J\,s}