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    1: <problem>
    2:   <include>
    3:     <parserlib> multiple_true </parserlib>
    4:   </include>
    5:   <part required="true">
    6:     <answergroup>
    7:       <outtext>
    8: 	Identify as true or false the following statements concerning
    9: 	images formed by a SINGLE OPTICAL ELEMENT.  The element may be a
   10: 	plane mirror, a concave mirror, a convex mirror, a converging
   11: 	lens, or a diverging lens.
   12: 	<tex> \newline </tex>
   13:       </outtext>
   14:       <block condition="&hinton()">
   15: 	<outtext>
   16: 	  Recall that real images are on the opposite side of a single
   17: 	  lens from the object. Real images for a mirror are on the
   18: 	  same side as the object.
   19: 	</outtext>
   20:       </block>
   21:       <randomlist>
   22: 	<multipletrueconcept description="Real Image Size">
   23: 	  <multipletrueresponse value=false>
   24: 	    <check style="check"> 
   25: 	      Real images are always smaller than objects. <br>
   26: 	    </check>
   27: 	  </multipletrueresponse>
   28: 	  <multipletrueresponse value=false>
   29: 	    <check style="check"> 
   30: 	      Real images are always larger than objects. <br>
   31: 	    </check>
   32: 	  </multipletrueresponse>
   33: 	</multipletrueconcept>
   34: 	<multipletrueconcept description="Virtual Image Direction">
   35: 	  <multipletrueresponse value=true>
   36: 	    <check style="check"> 
   37: 	      Virtual images are always  upright (i.e., of the same vertical
   38: 	      orientation as the objects).
   39: 	    </check>
   40: 	  </multipletrueresponse>
   41: 	  <multipletrueresponse value=false>
   42: 	    <check style="check"> 
   43: 	      Virtual images can be inverted (i.e., of the opposite vertical
   44: 	      orientation as the object which formed it).
   45: 	    </check>
   46: 	  </multipletrueresponse>
   47: 	</multipletrueconcept>
   48: 	<multipletrueconcept description="Real Image Direction">
   49: 	  <multipletrueresponse value=true>
   50: 	    <check style="check"> 
   51: 	      Real images are always inverted (i.e., of the opposite
   52: 	      vertical orientation as the object).
   53: 	    </check>
   54: 	  </multipletrueresponse>
   55: 	  <multipletrueresponse value=false>
   56: 	    <check style="check"> 
   57: 	      Real images can be upright (i.e., of the same vertical
   58: 	      orientation as the object).
   59: 	    </check>
   60: 	  </multipletrueresponse>
   61: 	</multipletrueconcept>
   62: 	<multipletrueconcept description="Where an object is relative 
   63: 	  to its image">
   64: 	  <multipletrueresponse value=true>
   65: 	    <check style="check"> 
   66: 	      The real image by a mirror is always on the same side as
   67: 	      the object. 
   68: 	    </check>
   69: 	  </multipletrueresponse>
   70: 	  <multipletrueresponse value=false>
   71: 	    <check style="check"> 
   72: 	      A mirror creates a virtual image on the same side as the
   73: 	      object.
   74: 	    </check>
   75: 	  </multipletrueresponse>
   76: 	  <multipletrueresponse value=false>
   77: 	    <check style="check"> 
   78: 	      A mirror creates a real image on the side opposite the
   79: 	      object.
   80: 	    </check>
   81: 	  </multipletrueresponse>
   82: 	  <multipletrueresponse value=true>
   83: 	    <check style="check"> 
   84: 	      The virtual image by a mirror is always on the side
   85: 	      opposite the object. 
   86: 	    </check>
   87: 	  </multipletrueresponse>
   88: 	</multipletrueconcept>
   89:       </randomlist>
   90:     </answergroup>
   91:   </part>
   92: </problem>