Tripling the Focal Length of a Telephoto Lens,while Holding Aperture

question 23

Multiple Choice

Tripling the focal length of a telephoto lens,while holding aperture size constant,will change the light intensity admitted to the film by what factor?

• A)0.11
• B)0.33
• C)3.0
• D)9.0
• E)​0.50

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Definitions:

Perceived Barriers

Individual beliefs about the difficulties or obstacles that prevent engagement in a certain behavior or actions.

Health Belief Model

A mental framework designed to understand and forecast health-related actions by examining the personal attitudes and convictions of people.

Perceived Susceptibility

An individual's belief regarding their risk of experiencing a negative event or condition.

Perceived Severity

An individual's belief regarding the extent of harm that a particular health issue or disease can cause.