Solve the following problem given below:
Problem: Polarized light of intensity 5 Wm-2 emerges from a linear polarizer. The polarized output from this polariser is directed through a second analyzer whose transmission axis is orientated at 30 degrees relative to the transmission axis of the first polarizer.
Part A- Calculate the intensity of the light that emerges from the analyser. The answer is 3.75W/m2.
Please also explain, thank you in advance, thank you.