Polarizer 1: incident polarization direction:0 o , transmitting direction: 20 o
ID: 1728479 • Letter: P
Question
Polarizer 1: incident polarization direction:0o, transmitting direction: 20o
angle between those directions: 20o. It(1) = Iicos2(20o)
Polarizer 2: incident polarization direction:20o, transmitting direction: 40o
angle between those directions: 20o. It(2) = Ii(2)cos2(20o)= Iicos2(20o)cos2(20o)
Polarizer 3: incident polarization direction:40o, transmitting direction: 60o
angle between those directions: 20o. It(3) = Ii(3)cos2(20o)= Iicos4(20o)cos2(20o)
For the three polarizers: If = Iicos6(20o) with Ii = 10.
Explanation / Answer
From the given hint the final intensity If =Ii cos6 (20) If = 10 cos6 (20) =6.885 = 6.89 units