In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot. The point labeled “ν₀” corresponds to light with a wavelength of 542 nm.

(a) What is the value of ν₀ in s^-1?

(b) What is the value of the work function of the metal in units of kJ/mol of ejected electrons?

(c) Note that when the frequency of the light is greater than ν₀, the plot shows a straight line with a nonzero slope. What is the slope of this line segment?

Transcribed Image Text:

Frequency - Electron kinetic energy-