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Author Question: A lens of focal length 40 mm is used as a magnifier. The object being viewed is 5.3 mm long, and is ... (Read 109 times)

geoffrey

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on: Jul 29, 2018
A lens of focal length 40 mm is used as a magnifier. The object being viewed is 5.3 mm long, and is positioned at the focal point of the lens. The user of the magnifier has a near point at 25 cm. What is the angular magnification of the magnifier?
 
  A) 6.3
  B) 5.6
  C) 6.9
  D) 7.5
  E) 8.1

Question 2

The acceleration due to gravity on Planet A is one-sixth what it is on Planet B, and the radius of the Planet A is one-fourth that of Planet B. The mass of Planet A is what fraction of the mass of Planet B?
 
  A) 1/6
  B) 1/16
  C) 1/24
  D) 1/96
  E) 1/12
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Juro

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

A

Answer to Question 2

D


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