The refractive power of a lens used as a magnifying glass is ...

[silviawilliams41]

The refractive power of a lens used as a magnifying glass is negative.
 
  Indicate whether the statement is true or false

Question 2

A measurement of an electron's speed is 2.0  106 m/s and has an uncertainty of 10. What is the minimum uncertainty in position?
 
  A)
 
  0.29 nm
  B)
 
  0.58 nm
  C)
 
  0.87 nm
  D)
 
  1.2 nm
  E)
 
  1.6 nm

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Answer to Question 1

FALSE

Answer to Question 2

B