Question

a) the work function of a metal is known to be 5.86×10^-19 J. Calculate the minimum frequency of light required to release electrons from the metal.

answer: 8.84×10¹⁴s^-1

b)For the metal above calculate the velocity (in m m^–1) of the ejected electrons if light with a frequency of 2.00×10¹⁵ s^–1 is used to irradiate the metal surface.

Answer 1