1.7 Exercise 19

In order to rotate the polarization axis of a beam of linearly polarized light by $90.0 °$, a student places sheets $\text{P}_{1}$ and $\text{P}_{2}$ with their transmission axes at $45.0 °$ and $90.0 °$, respectively, to the beam’s axis of polarization. (a) What fraction of the incident light passes through $\text{P}_{1}$ and (b) through the combination? (c) Repeat your calculations for part (b) for transmission-axis angles of $30.0 °$ and $90.0 °$, respectively.