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Question: 

What is the focal length of the eye–lens system when viewing an object

  1. at infinity, and
  2. 34 cm from the eye? Assume that the lens–retina distance is 2.0 cm.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. 2.0 cm
  2. 1.9 cm

Giancoli 7th Edition, Chapter 25, Problem 19

(1:21)

Chapter 25, Problem 19 is solved.

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