A Camera Has a Converging Lens with a Focal Length

question 39

Multiple Choice

A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the diameter of the lens (in mm) ?

• A) 10
• B) 31
• C) 0.50
• D) 20
• E) 50

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Definitions:

Preexisting Idea

An opinion, belief, or concept that one holds before being exposed to new information or experiences.

New Experience

An encounter or activity that one has not previously undergone, offering novel sensations, knowledge, or challenges.

Circular Reactions

Repetitive actions in early child development that serve to reinforce the infant's own learning and motor skills through repeated practice.

Motor Reflexes

Involuntary and automatic movements in response to stimuli, crucial for motor development and survival.