Physics 107 - Light Intensity I |
First, go through worked example I and answer all of the
questions. Work in pairs on this and hand in when you are done.
To develop a model relating intensity to the number of plastic
sheets blocking the light, make measurements using a wide range of
number of sheets. To get started
You need to include uncertainty in these plots and we will show
you how to handle that when rescaling graph axes.
Once you are satisfied with the data, and are satisfied with your
semilog plot, write down the model that describes intensity versus
number of sheets.
Marking Scheme
2 marks
for worked examples at the start
2 marks for description of experimental technique, for
your first measurements
2 marks for critique of first data and plan for more
data-taking
2 marks for
critiqe after your second set of data and plan for more
data-taking
3 marks for total, final data set with uncertainty
2 marks for
semi-log plot of data
2 marks for
conclusion, including estimate of the coefficient in the
exponential (what model describes the data, including estamates of
the coefficients)