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Chapter 18: Mirrors and Lenses

Practice Test
      
  1.Real images produced by mirrors have __________ magnification.  
  a.   negative  
  b.   opposite  
  c.   massive  
  d.   positive  
  Hint    
      
  2.The image produced by the ocular of a microscope is a(n) __________.  
  a.   virtual image  
  b.   real image  
  c.   object image  
  d.   reflected image  
  Hint    
      
  3.When an object is placed between the focal point and a concave mirror, the rays __________.  
  a.   diverge and sight lines converge and form a virtual image  
  b.   converge and sight lines converge and form a real image  
  c.   converge and sight lines diverge and form a virtual image  
  d.   diverge and sight lines diverge and form a real image  
  Hint    
      
  4.A __________ image is formed when light rays converge and pass through the image.  
  a.   virtual  
  b.   real  
  c.   convex  
  d.   critical  
  Hint    
      
  5.__________ single lenses have chromatic aberration  
  a.   Only parabolic  
  b.   Only convex  
  c.   All  
  d.   Only concave  
  Hint    
      
  6.__________ is located behind a convex mirror.  
  a.   The object  
  b.   A ray  
  c.   The focal point  
  d.   A real image  
  Hint    
      
  7.A concave lens is also known as a __________ lens.  
  a.   converging  
  b.   plane  
  c.   diverging  
  d.   concave  
  Hint    
      
  8.An image of a flower is seen through a lens. What is the object?  
  a.   a flower  
  b.   a mirror  
  c.   an image  
  d.   a lens  
  Hint    
      
  9.A 10-cm object has a 20-cm image. What is the magnification?  
  a.   2  
  b.   1/2  
  c.   20  
  d.   10  
  Hint    
      
  10.You are standing in front of a bathroom mirror. Where is your image located?  
  a.   behind you  
  b.   between you and the mirror  
  c.   behind the mirror  
  d.   in front of the mirror  
  Hint    

 
   
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