A Beam of Light Is Polarized in a Vertical Plane

question 29

Multiple Choice

A beam of light is polarized in a vertical plane and has an intensity I₀.The beam passes through an ideal polarizer and then through an ideal analyzer whose axis is set horizontally.If the axis of the polarizer is set at 60° with the vertical,what is the ratio of the intensity of the final beam to I₀?

• A)0.19
• B)0.25
• C)0.31
• D)0.37
• E)0.43

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Definitions:

Discriminant Validity

A measure of the degree to which a construct is truly distinct from other constructs by correlating minimally or not at all with measures from which it is theoretically supposed to differ.

IQ

An abbreviation for Intelligence Quotient, it's a measure of a person's reasoning ability compared to the statistical norm or average for their age, taken as 100.

Mode

A statistical term that refers to the most frequently occurring number found in a set of numbers.

Barnum Effect

The phenomenon where individuals believe that vague, general personality descriptions accurately apply specifically to them.