The Focal Length of a Thin Lens Is 40 Mm

question 32

Multiple Choice

The focal length of a thin lens is 40 mm and its aperture diameter is 10 mm. What is the f-number of this lens?

• A) 4.0
• B) 2.0
• C) 5.6
• D) 0.30
• E) 0.40

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Definitions:

Autobiographies

Written accounts of one's own life, often used in psychological studies to understand personality development and life experiences.

Historical Information

Recorded or gathered data about past events and conditions relevant to a particular subject or field.

Client's Memory

Refers to the recall and retention abilities of a client, often assessed in therapeutic or clinical settings.

Situational Test

A type of assessment designed to measure a person's responses and behaviors in simulated environments or scenarios that mimic real-life situations.