For a metal surface

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

For a metal surface, the best-fit equation of the experimental line relating stopping potential

V_0

(in volt) to light frequency

\nu

(in hertz) is

V_0 = 4.14\times10^{-15}\,\nu - 2.07.

Determine the threshold wavelength of the metal (nearest value). (a)

6.0\times10^{-8}\,\text{m}

(b)

1.24\times10^{-6}\,\text{m}

(c)

6.0\times10^{-7}\,\text{m}

(d)

3.0\times10^{-7}\,\text{m}