The Doppler Effect As a train moves toward an observer (seethe figure), the pitch of its whistle sounds higher to theobserver than it would if the train were at rest, because thecrests of the sound waves are compressed closer together. Thisphenomenon is called the Doppler effect. The observed pitchP is a function of the speed √ of the train and is given by | 92. Focusing Distance For a camera with a lens of fixed focallength F to focus on an object located a distance x from thelens, the film must be placed a distance y behind the lens,where F, x, and y are related by11 1y(See the figure.) Suppose the camera has a 55-mm lens (F = 55).(a) Express y as a function of x, and graph the function.(b) What happens to the focusing distance y as the objectmoves far away from the lens?(c) What happens to the focusing distance y as the objectmoves close to the lens?

Given function is: 1x+1y=1F Given that, F=55 Then we get, 1x+1y=1551y=155-1xy=55xx-55 Hence is the…

Answered: | 92. Focusing Distance For a camera…

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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The Doppler Effect As a train moves toward an observer (see
the figure), the pitch of its whistle sounds higher to the
observer than it would if the train were at rest, because the
crests of the sound waves are compressed closer together. This
phenomenon is called the Doppler effect. The observed pitch
P is a function of the speed √ of the train and is given by

| 92. Focusing Distance For a camera with a lens of fixed focal
length F to focus on an object located a distance x from the
lens, the film must be placed a distance y behind the lens,
where F, x, and y are related by
11 1
y
(See the figure.) Suppose the camera has a 55-mm lens (F = 55).
(a) Express y as a function of x, and graph the function.
(b) What happens to the focusing distance y as the object
moves far away from the lens?
(c) What happens to the focusing distance y as the object
moves close to the lens?

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