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Chapter 18: Mirrors and Lenses

Practice Test
      
  1.In a concave mirror, an object placed __________ will result in a virtual image.  
  a.   between the focal point and twice the distance of the focal point  
  b.   between the focal point and mirror  
  c.   twice the distance of the focal point  
  d.   past the focal point  
  Hint    
      
  2.What does the F on a ray diagram represent?  
  a.   the focal point  
  b.   the center of the mirror  
  c.   the location of the object  
  d.   the location of the virtual image  
  Hint    
      
  3.When an object is placed between the focal point and a concave mirror, the rays __________.  
  a.   converge and sight lines converge and form a real image  
  b.   diverge and sight lines diverge and form a real image  
  c.   diverge and sight lines converge and form a virtual image  
  d.   converge and sight lines diverge and form a virtual image  
  Hint    
      
  4.__________ single lenses have chromatic aberration  
  a.   Only parabolic  
  b.   Only concave  
  c.   All  
  d.   Only convex  
  Hint    
      
  5.__________ is located behind a convex mirror.  
  a.   A ray  
  b.   The focal point  
  c.   A real image  
  d.   The object  
  Hint    
      
  6.Unlike mirrors, lenses have __________.  
  a.   one focal point  
  b.   no focal points  
  c.   two focal points  
  d.   many focal points  
  Hint    
      
  7.The distance from the focal point to the mirror is the __________.  
  a.   focal length  
  b.   focus point  
  c.   focal distance  
  d.   foci  
  Hint    
      
  8.Which type of mirror produces an image that is always erect, always the same height as the object, and always virtual?  
  a.   convex  
  b.   diffuse  
  c.   plane  
  d.   concave  
  Hint    
      
  9.You are standing in front of a bathroom mirror. Where is your image located?  
  a.   between you and the mirror  
  b.   in front of the mirror  
  c.   behind the mirror  
  d.   behind you  
  Hint    
      
  10.An image of a flower is seen through a lens. What is the object?  
  a.   an image  
  b.   a flower  
  c.   a lens  
  d.   a mirror  
  Hint    

 
   
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