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Biology with MasteringBiology™ (8th Edition)

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  MULTIPLE CHOICE.  Choose the one alternative that best completes the statement or answers the question.  1) 
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Two plane  mirrors  make an  angle of    A light ray  enters the  system and  is reflected  once off  each mirror.  Through  what angle is  the ray  turned? 
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1)  _______  A) 
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90° 
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B) 
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120° 
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C) 
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60° 
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D)  15 0  
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A fish  appears to  be  2.00 m  below the  surface of a  pond when  viewed  almost  directly  above by a  fisherman.  What is the  actual depth  of the fish?   
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2)  _______  A) 
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1.5 m 
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B) 
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0.38 m 
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C) 
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0.67 m 
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D)  2. 6  
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A cylindrical  tank is 50.0  ft deep,   in  diameter,  and filled to  the top with  water. A  flashlight  shines into  the tank  from above.  What  minimum  angle   can φ   its beam  make with  the water  surface if the  beam is to  illuminate  part of the  bottom?   
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3)  _______  A) 
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37.1° 
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B) 
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30.9° 
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C) 
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47.3° 
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D)  42 .  
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A drop of  unknown  liquid is  placed at the  point on a  glass surface  where  internal  reflection is  occurring at   The  drop is  heated until  internal  reflection  occurs.  What is the  refractive  index of the  liquid if   
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4)  _______  A) 
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1.19 
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B) 
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1.07 
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This document was uploaded on 04/16/2010.

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