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Electrostatics — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectrostatics1 Mark
Question

A small sphere carrying a charge ‘q’ is hanging in between two parallel plates by a string of length L. Time period of pendulum is . When parallel plates are charged, the time period changes to T . The ratio   is equal to

(a)

(b)

(c)

(d) None of these
✓

Answer

(c)

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