What angle should the beam made with the vertical, so that after passing through the analyzer, it’s intensity should become 0.86 times the initial intensity?

What angle should the beam made with the vertical, so that after passi

1.	What angle should the beam made with the vertical, so that after passing through the analyzer, it’s intensity should become 0.86 times the initial intensity?
A.	30°
B.	45°
C.	60°
D.	75°
Answer» D.