1.

A simple pendulum of length `l` has a bob of mass `m` , with a charge `q` on it. A vertical sheet of charge , with the vertical . Its time period of oscillation is `T` in this position (i) `tan theta = (sigma q)/(2 epsilon_(0) mg)` (ii) `tan theta = (sigma q)/(epsilon_(0) mg)` (iii) `T lt 2 pi sqrt((l)/(g))` (iv) `T gt 2pi ((l)/(g))`

Answer» Correct Answer - (a). `sqrt(4gL)`
(b). `sqrt(4.5gL)`


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