Q:
      
      
         
            
Optical fiber works on the principle of
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) total internal reflection         
         
Explanation: 
 
Optical fiber works on the principle of total internal reflection.
 
The Total Internal Reflection is the phenomenon in which the complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle.
       
      
      
      
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