Question

What is the work function of the experimental photo-missive material?

0.50 eV
-2.9 eV
-1.2 eV
-2.0 eV

Answer 1

−2.0 eV

Step-by-step explanation:

I got it right on the test.

Answer 2

The answer for this exercise is the last option, which is:
`-2.0eV`

The explanation is shown below:

1. The graph shows the Photoelectric effect, which is defined as the ejection of electrons from a solid, this is caused by the incident of ligth. The maximum kinetic energy depends of the frequency of this ligth.

2. You must find the
`y-intercept` the graph shown in the figure attached to solve the exercise:

`y-intercept=-2.0 eV`