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Initially key was placed on (1) till the capacitor got fully charged. Key is placed on (2) at `t=0`. The time when the energy in both capacitor and inductor will be same-

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Options:
(a) `(pisqrt(LC))/4` (b) `(pisqrt(LC))/2` (c) `(5pisqrt(LC))/4` (d) `(5pisqrt(LC))/2`

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