Physics-
General
Easy

Question

Two similar conducting balls of mass m are hung from silk threads of length L and carry similar charges q as shown in the figure. Assuming theta to be small, the distance x between the balls is

  1. open square brackets fraction numerator q to the power of 2 end exponent L over denominator 4 pi epsilon subscript 0 end subscript m g end fraction close square brackets to the power of 1 divided by 3 end exponent    
  2. open square brackets fraction numerator q to the power of 2 end exponent L over denominator 2 pi epsilon subscript 0 end subscript m g end fraction close square brackets to the power of 1 divided by 3 end exponent    
  3. open square brackets fraction numerator q to the power of 2 end exponent L over denominator 4 pi epsilon subscript 0 end subscript m g end fraction close square brackets to the power of 3 divided by 2 end exponent    
  4. open square brackets fraction numerator q to the power of 2 end exponent L over denominator 2 pi epsilon subscript 0 end subscript m g end fraction close square brackets to the power of 1 divided by 2 end exponent    

The correct answer is: open square brackets fraction numerator q to the power of 2 end exponent L over denominator 2 pi epsilon subscript 0 end subscript m g end fraction close square brackets to the power of 1 divided by 3 end exponent

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