How Far from a Lens Having a Focal Length of +50

question 64

Multiple Choice

How far from a lens having a focal length of +50 mm must the object be placed if it is to form a virtual image that is 3.0 times the size of the object?

• A)33 mm
• B)42 mm
• C)48 mm
• D)54 mm

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Definitions:

Placebos

Inert substances or treatments given to a participant in an experiment, lacking any specific pharmacological effect, used as a control to test the effectiveness of drugs.

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Schachter And Singer

Known for their two-factor theory of emotion, suggesting that emotions are the result of physiological arousal and the cognitive labeling of that arousal.

Physiological Condition

The state of functioning of living organisms and their bodily parts.