The Focal Length of the Lens of a Simple Film

question 75

Multiple Choice

The focal length of the lens of a simple film camera is 40.0 mm.By what amount should the distance between the lens and the film be increased or decreased to change the focus from a person who is 25 m from the lens to one who is 4.0 m from the lens?

• A)0.2 mm
• B)0.3 mm
• C)0.4 mm
• D)0.5 mm
• E)0.7 mm

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Definitions:

Rarity Principle

A concept in economics and marketing suggesting that rare or scarce items are perceived as more valuable.

Plentiful Opportunities

The abundant availability or presence of options or circumstances for action or engagement.

Compliance-Gaining Technique

Strategies used to persuade or induce others to align with one's requests or directions.

Elaboration Likelihood Model

A theory suggesting two primary pathways (central and peripheral) through which persuasion occurs, based on the depth of processing.