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Chapter 35: Q. 8 (page 1017)

What is the aperture diameter of a 12mmfocal-length lens set to f/4.0?

Short Answer

Expert verified

The Diameter of the aperture is3mm.

Step by step solution

01

Given information

We have given,

f-number = 4

Focal length = 12mm

we have to find the diameter of the aperture.

02

Simplify

We know that the f-number is defined the ratio between the focal length and diameter.

f-number=fDD=ff-number=12mm4D=3mm

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