An Object 4 Cm High Is Placed 15 Cm in Front

question 10

Multiple Choice

An object 4 cm high is placed 15 cm in front of a convex mirror with a focal length of −10 cm. What is the image position (in cm) ?

• A) −8
• B) −4
• C) −2
• D) −6
• E) 30

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Definitions:

Effort Justification

A psychological phenomenon where individuals rationalize the effort they put into a task by increasing their valuation of the outcome.

Minimal Deterrence

A strategy in international relations aimed at preventing undesirable actions by other states, using the least force or threat possible.

Overjustification

The phenomenon where providing an extrinsic reward for behavior that was previously intrinsically rewarding can lead to a reduction in intrinsic motivation.

Cognitive Dissonance

A psychological state of discomfort caused by holding conflicting beliefs, values, or attitudes, leading to motivation for change.