Polarization physcs sum?

[qulimuli]

Unpolarized light is incident on 2 polarizng sheets placed on top of the other...each sheet reduces the intensity of unpolarized light by 50%..wat must be the angle between the characteristic direction of sheet such tat the intnsty of transmittd light is 1/3rd of the incident?????

[qulimuli]

please solve this summ

[micromass]

Please post this in the homework section. And include an attempt.

Also: http://www.physicsforums.com/showthread.php?t=414380