7. A single photon, from an unpolarized source, traveling in thez direction is directed through a series of three polarizers: firsta polarizer with its axis in the x direction, then a polarizer at25 degrees to the x direction, then finally a y polarizer.
a) What is the probability that the photon makes it through thefirst (x) polarizer and what is the photon’s polarization after itcomes through the first polarizer?
b) For a photon that got through the first (x) polarizer, whatis the probability that that photon goes through the next twopolarizers and what is the photon’s polarization after it comesthrough the last polarizer?
c) If the middle (25 degree) polarizer is removed, what is theprobability that the photon gets through both (remaining)polarizers?
