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Author Question: A 14-mm tall postage stamp is 4.0 mm from a converging lens. If the image of the stamp is 4.0 mm ... (Read 80 times)

Frost2351

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A 14-mm tall postage stamp is 4.0 mm from a converging lens. If the image of the stamp is 4.0 mm tall, how far is it from the lens?
 
  A) 14 mm
  B) 8.7 mm
  C) 1.4 mm
  D) 1.1 mm

Question 2

A seed is 15 mm in front of a converging lens, and the image of the seed is 4.0 mm behind the lens. What is the focal length of the lens?
 
  A) 11 mm
  B) 5.5 mm
  C) 3.8 mm
  D) 3.2 mm


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milbourne11

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Frost2351

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it


raenoj

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Reply 3 on: Yesterday
Wow, this really help

 

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