A Camera Lens Having a 50-Mm Focal Length Is Set $0.59 \mathrm {~mm}$

question 92

Multiple Choice

A camera lens having a 50-mm focal length is set to f/4.0. What is the minimum spacing of two objects located 12 m from the lens if the objects are just barely resolved in the image using light of
Wavelength 500 nm?

• A) \(0.59 \mathrm {~mm}\)
• B) \(4.72 \mathrm {~mm}\)
• C) \(0.024 \mathrm {~mm}\)
• D) \(1.66 \mathrm {~mm}\)
• E) \(4.9 \times 10 ^ { - 5 } \mathrm {~m}\)

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Definitions:

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, controlling the passage of substances in and out.

Concentration Gradient

The variation in the distribution of molecules or ions across a space or membrane, which often dictates the direction of particles’ movement (e.g., high to low concentration).

High Concentration

A state or condition of having a large amount of substance in a certain volume or area, or the ability to focus intensely on a task or activity.

Low Concentration

A situation or state where there is a reduced amount of a substance present in a solution or mixture compared to other components.