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Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker
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· · · The diameter of a collimated laser beam can be

Chapter 27, Problem 103GP

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QUESTION:

The diameter of a collimated laser beam can be expanded or reduced by using two converging lenses, with focal lengths \(f_{1} \text { and } f_{2}\), mounted a distance \(f_{1}+f_{2}\) from each other, as shown in Figure What is the ratio of the two beam diameters, \(\left(d_{1} / d_{2}\right)\), expressed in terms of the focal lengths?

Equation Transcription:

Text Transcription:

f1 and f2

f1+f2

(d1/d2)

Questions & Answers

QUESTION:

The diameter of a collimated laser beam can be expanded or reduced by using two converging lenses, with focal lengths \(f_{1} \text { and } f_{2}\), mounted a distance \(f_{1}+f_{2}\) from each other, as shown in Figure What is the ratio of the two beam diameters, \(\left(d_{1} / d_{2}\right)\), expressed in terms of the focal lengths?

Equation Transcription:

Text Transcription:

f1 and f2

f1+f2

(d1/d2)

ANSWER:

Step 1 of 4

The figure shows a beam of diameter  that passes through two lenses that are separated by the sum of their focal lengths. The lenses increase the diameter of the beam to .

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