Question

Unpolarized light of intensity 900 W/m2 is incident on two ideal polarizing sheets that are placed with their transmission axes perpendicular to each other. An additional polarizing sheet is then placed between the two, with its transmission axis oriented at 30° to that of the first. 1) What is the intensity of the light passing through the stack of polarizing sheets? (Express your answer to two significant figures.) W/m2 Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 2) What orientation of the middle sheet enables the three-sheet combination to transmit the greatest amount of light? Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question.

Answer 1

rule is, given by one Solution: o od let the intensity of the light is Io. of the light is inrtially circearly, the irradiance 1, of the light transmitted by the first sheet is, half I, - 10/2 -> 0 * The intensity of the light after passing through Second polarizer is, I. I, cas202 → * The angle between the first and Second polarizor is, 02 = 30° * The angle between the second and Hire parizer û 03 = 70' 30" # 600 it from equations O. ④ and 6, we get La To [cos 30) (00360] -(0.5)(900 Hel) (Cos 30 ) (cris60) 1₂ = 84.375 W/m2 to the intensili is mani mum when the inserted - sheet is at an angle o ut with first sheet o 1 x Then 13 = ² Io [Carte] 84.875 = 3 (900) cos 40) COSO. 168.75 900 10= 64.31°)