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Author Question: The focal length of the lens of a simple camera is 40.0 mm. How far must the lens be moved to change ... (Read 229 times)

jilianpiloj

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on: Jul 29, 2018
The focal length of the lens of a simple camera is 40.0 mm. How far must the lens be moved to change the focus of the camera from a person 25 m away to one that is 4.0 m away?
 
  A) 0.2 mm
  B) 0.3 mm
  C) 0.4 mm
  D) 0.5 mm
  E) 0.7 mm

Question 2

When Niels Bohr was knighted for his contributions to physics, he chose for his coat of arms
 
  A) a model of the planetary atom.
  B) a rendition of an energy-level diagram.
  C) the yin-yang symbol of Eastern culture.
  D) none of the above


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Fayaz00962

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

Answer: C


jilianpiloj

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Reply #2 on: Jul 29, 2018
Thanks


Fayaz00962

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Reply #3 on: Jul 29, 2018
Welcome :)


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