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A simple pendulum has a length `l` & mass of bob m. The bob is given a charge q coulomb. The pendulum is suspended in a uniform horizontal electric field of strength E as shown in figure, then calculate the time period of oscillation when bob is slightly displaced from its mean position. A. `2pi sqrt(l/g)`B. `2pi sqrt({l/(g+(qE)/m)})`C. `2pi sqrt({l/(g-(qE)/m)})`D. `2pi sqrt(l/sqrt(g^(2)+((qE)/m)^(2)))` |
Answer» Correct Answer - D | |