Physics-
General
Easy

Question

Figure shows a glowing mercury tube. The illuminances at point A, B and C are related as

  1. B greater than C greater than A    
  2. A greater than C greater than B    
  3. B equals C greater than A    
  4. B equals C less than A    

The correct answer is: B equals C less than A


    By the symmetry of the rays and location of the points.

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