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The bob of a simple pendulum is hanging vertically down from a fixed identical bob by means of a string of length I. If both bobs are charged with a charge \( q \) each, time period of the pendulum is (ignore the radii of the bobs)
(A) \( 2 \pi \sqrt{\frac{1}{g+\frac{q^{2}}{1^{2} m}}} \)
(B) \( 2 \pi \sqrt{\frac{1}{g-\left(\frac{q^{2}}{r^{2} m}\right)}} \)
(C) \( 2 \pi \sqrt{\frac{1}{g}} \)
(D) \( 2 \pi \sqrt{\frac{1}{g-\left(\frac{q^{2}}{1}\right)}} \)
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