Question

Unpolarized light with intensity 370W/m2 passes first through a polarizing filter with its axis vertical, then through a second polarizing filter. It emerges from the second filter with intensity 121W/m2 .

What is the angle from vertical of the axis of the second polarizing filter?
Express your answer to two significant figures and include the appropriate units

Answer 1

Answer:

36°

Step-by-step explanation:

Using

I= (1/2Io) cos²စ

Then Substituting

121W/m² = 1/2*370W/m²cos²စ

0.8086= cosစ

Cos^-1 0.8086= 36°