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[" Example "1.24" A ball having charge q...

[" Example "1.24" A ball having charge q and mass "m" is suspended "],[" from a string of length "L" between two parallel plates where a "],[" vertical electric field "E" is established.Find the time period of "],[" simple pendulum if electric field is directed (i) downward and "],[" (ii) upward."],[" Sol.(i) When electric field is downward "],[" Eor simple pendulum,"]

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