Physics-
General
Easy

Question

Four identical plates 1, 2, 3 and 4 are placed parallel to each other at equal distance as shown in the figure. Plates 1 and 4 are joined together and the space between 2 and 3 is filled with a dielectric of dielectric constant k = 2. The capacitance of the system between 1 and 3 & 2 and 4 are C1 and C2 respectively. The ratio C1/C2 is

  1. fraction numerator 5 over denominator 3 end fraction    
  2. 1    
  3. fraction numerator 3 over denominator 5 end fraction    
  4. fraction numerator 5 over denominator 7 end fraction    

The correct answer is: 1

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