A Man's Face Is 30 Cm in Front of a Concave

question 3

Multiple Choice

A man's face is 30 cm in front of a concave spherical shaving mirror.If the image is erect and 1.5 times as large as his face,what is the radius of curvature of the mirror?

• A) 40 cm
• B) 60 cm
• C) 100 cm
• D) 140 cm
• E) 180 cm

---

Definitions:

Primacy Effect

The propensity to better remember items presented at the outset of a list compared to those that are mentioned later.

First Information

Initial data or knowledge received about a subject or situation, often crucial for decision-making processes.

Social Loafing

The phenomenon where individuals put forth less effort when working in a group compared to when working alone.

Implicit Association Test (IAT)

A psychological assessment tool that measures the strength of association between concepts in a person's mind, revealing unconscious biases.