Science Home Product Information Site Map Search Contact Us   Glencoe Online
Quizzes Quiz
Mirrors and Lenses

Practice Test
  1.What happens to light rays emitted from a light source?  
  a.   They follow the paths of Earth's magnetic field lines.  
  b.   They travel in curved paths.  
  c.   They remain concentrated at the light source.  
  d.   They spread out from the light source.  
  2.A __________ lens is thinner in the middle and thicker at the edges.  
  a.   concave  
  b.   convex  
  c.   plane  
  d.   spherical  
  3.When an object is farther from a concave mirror than the focal point is, the image that is formed is __________.  
  a.   upright and smaller than the object  
  b.   inverted and smaller than the object  
  c.   enlarged and inverted  
  d.   upright and enlarged  
  4.Which of the following is required for your eye to see an object?  
  a.   a telescope  
  b.   a mirror  
  c.   air  
  d.   light coming from the object  
  5.Any smooth surface that reflects light to form an image is a(n) __________.  
  a.   camera  
  b.   optical axis  
  c.   mirror  
  d.   lens  
  6.Which of the following conditions occurs when the cornea is curved unevenly?  
  a.   a stigmatism  
  b.   nearsightedness  
  c.   farsightedness  
  d.   blindness  
  7.What type of image does a microscope form?  
  a.   real enlarged  
  b.   real diminished  
  c.   virtual enlarged  
  d.   virtual diminished  
  8.Which of the following uses a concave mirror?  
  a.   space telescope  
  b.   refracting telescope  
  c.   telephoto lens  
  d.   reflecting telescope  
  9.Which of the following concave lenses forms a virtual image?  
  a.   object beyond three focal lengths  
  b.   object between one and two focal lengths  
  c.   object within one focal length  
  d.   object between two and three focal lengths  
  10.The __________ is an imaginary straight line perpendicular to the center of a concave mirror.  
  a.   optical axis  
  b.   focal point  
  c.   ray  
  d.   tangent  
  11.Which of these describes a real image?  
  a.   Rays diverge as they are reflected from the mirror.  
  b.   Rays of light meet at the image.  
  c.   No light rays pass through the image.  
  d.   The image is formed by a plane mirror.  
  12.The law of reflection states that __________.  
  a.   the angle of incidence is less than the angle of reflection  
  b.   the angle of incidence is equal to the angle of reflection  
  c.   the angle of incidence is greater that the angle of reflection  
  d.   light waves change their speed when they move from one medium into another  
  13.A _________ mirror is a flat, smooth mirror.  
  a.   convex  
  b.   plane  
  c.   concave  
  d.   spherical  
  14.What type of image is formed on the retina?  
  a.   backwards  
  b.   inverted  
  c.   upright virtual  
  d.   upright real  
  15.Which of the following mirror shapes forms a real image?  
  a.   concave  
  b.   plane  
  c.   spherical  
  d.   convex  
  16.A _________ mirror is curved outward.  
  a.   spherical  
  b.   convex  
  c.   plane  
  d.   concave  
  17.What kind of lens is helpful to nearsighted people?  
  a.   convex  
  b.   concave  
  c.   flat  
  d.   plane  
  18.What is the difference between a lens and a mirror?  
  a.   A lens has no focal point.  
  b.   Lenses reflect light, and light passes through mirrors.  
  c.   A mirror has no optical axis.  
  d.   Mirrors reflect light, and light passes through lenses.  
  19.The transparent covering on the human eyeball is called the __________.  
  a.   lens  
  b.   iris  
  c.   retina  
  d.   cornea  
  20.What structure carries electrical signals from the retina to the brain to be interpreted?  
  a.   optic nerve  
  b.   sclera  
  c.   cornea  
  d.   focal point  

McGraw-Hill / Glencoe
The McGraw-Hill Companies