Q:
      
      
         
            
What is the principal focus of a spherical mirror?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: B) It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection or appear to be arising from this point on the principal axis         
         
Explanation: 
       
      
      
      
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