An Object Is Placed 60 Cm in Front of a Mirror

question 1

Multiple Choice

An object is placed 60 cm in front of a mirror and the image is upright and ¼ the size of the object. What is the focal length of the mirror?

• A) −12 cm
• B) −20 cm
• C) −45 cm
• D) −75 cm
• E) some positive value not given

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Definitions:

Behavior

The behavior or responses of a person or system when influenced by external or internal factors.

Incentive

A factor, often a reward or a form of motivation, that induces or influences a person to act or perform in a certain way.

Social Disapproval

Negative judgments or reactions from others in response to an individual's actions, beliefs, or characteristics, often leading to feelings of shame or embarrassment.

Blood Glucose Level

The concentration of glucose present in the blood, vital for maintaining energy in cells, and critical in managing diabetes.