The Following Items Are Positioned in Sequence: a Source of a Beam

question 34

Multiple Choice

The following items are positioned in sequence: A source of a beam of natural light of intensity $I _ { 0 }$ , three ideal polarizers A, B, and C; and an observer. Polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. The axis angle of polarizer $A$ is set at $0 ^ { \circ }$ (vertical) , and the axis angle of polarizer $C$ is set at $50 ^ { \circ }$ . The axis angle of polarizer $B$ is set at $120 ^ { \circ }$ . What is ratio of the intensity of the beam at the observer to the intensity $I _ { 0 }$ of the source?

• A) \(0.015\)
• B) \(0.035\)
• C) \(0.020\)
• D) \(0.025\)
• E) \(0.030\)

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Definitions:

Price Level

The price level is an aggregate measure that reflects the average of current prices across the entire spectrum of goods and services produced in the economy.

Consumption Spending

Consumption spending refers to the total amount of money spent by households and individuals on goods and services for personal use.

Aggregate Demand Curve

A graphical representation showing the overall demand for all goods and services in an economy at various price levels, typically downward sloping.

Real Gross Domestic Product

An inflation-adjusted measure that reflects the value of all goods and services produced by an economy in a given year, expressing the total economic output in constant prices.