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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Ethical View

A perspective based on beliefs about what is right and wrong that influences decision-making and behavior.

Ethics

A branch of philosophy that involves systematizing, defending, and recommending concepts of right and wrong behavior.

Right And Wrong

Principles that govern the morality, ethics, and legality of actions or decisions.