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Magnets `A` and `B` are geometrically similar but the magnetic moment of `A` is twice that of `B`. If `T_(1)` and `T_(2)` be the time periods of the oscillation when their like poles and unlike poles are kept togather respectively, then `T_(1)/T_(2)` will beA. `(1)/(3)`B. `(1)/(2)`C. `(1)/(sqrt3)`D. `sqrt3` |
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Answer» Correct Answer - C `T = 2 pi sqrt(1//MB_(H)) :. T_(1) = 2pi sqrt([(2l)/((P_(m) + 2P_(m))B_(H))])` `T_(2) = 2 pi sqrt([(2l)/((2P_(m) + P_(m)) B_(H))])` `:. (T_(1))/(T_(2)) = (1)/(sqrt3)` |
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