Camera: a Camera Lens Has a Focal Length of 50

question 67

Multiple Choice

Camera: A camera lens has a focal length of 50.0 mm and an aperture setting of f/4.00. What is the aperture diameter of this lens?

• A) 12.5 mm
• B) 10.1 mm
• C) 13.6 mm
• D) 14.2 mm
• E) 15.0 mm

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Definitions:

Calories Consumed

The amount of energy intake from food and drink by an organism, measured in calories.

Wheat

A cereal grain that is a staple food for much of the world's population, used to make products like bread, pasta, and pastries.

Industrialized Agriculture

An approach to farming that relies on heavy machinery, chemical inputs, and large-scale monoculture practices to increase productivity and output.

Developed Countries

Nations that have a high level of industrialization, a high standard of living, and a high Human Development Index (HDI), marked by well-developed infrastructure, healthcare, and education systems.