A Linearly Polarized Electromagnetic Wave Is Sent Through Two Sheets

question 29

Multiple Choice

A linearly polarized electromagnetic wave is sent through two sheets of polarizing material. The first sheet, A, is oriented so that its transmission axis makes an angle of 30° with respect to the incident electric field of the wave. The second sheet, B, is oriented so that its transmission axis makes an angle of 90° with the incident electric field of the wave. The incident beam has an electric field of peak magnitude E₀ and average intensity S₀.
-What is the average intensity of the wave after it passes through B?

• A)0.19S₀
• B)0.34S₀
• C)0.43S₀
• D)0.50S₀
• E)zero

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Definitions:

Cognitive Development

The study of how thinking, problem-solving, and intelligence evolve as individuals grow, often focusing on childhood development.

Formal Operations

The final stage of cognitive development in Jean Piaget's theory, marked by the ability to think abstractly and to understand hypothetical concepts.

Concrete Operations

A stage in cognitive development, as theorized by Jean Piaget, where children gain the ability to think logically about concrete events.

Formal Operational Stage

The Formal Operational Stage is the final stage in Piaget's cognitive development theory, starting at around age 12, where individuals gain the ability to think abstractly, reason logically, and understand hypothetical situations.