Situation 25.1 the Following Are Positioned in Sequence: a Source of a of a Beam

question 22

Multiple Choice

Situation 25.1
The following are positioned in sequence: A source of a beam of natural light of intensity Io;three ideal polarizers A,B,and C;and an observer.Polarizer axis angles are measured clockwise from the vertical,from the perspective of the observer.The axis angle of polarizer A is set at zero degrees (vertical) ,and the axis angle of polarizer C is set at 50 degrees.
-In Situation 25.1,polarizer B is set so that the beam intensity is zero at the observer.The two possible axis angle settings of polarizer B are:

• A)40° and 90°
• B)40° and 130°
• C)40° and 140°
• D)90° and 130°
• E)90° and 140°

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