Passage

then what is wrong in what im saying

as i have said earlier MOI was wrong in Nish bhaiyyas calculation

he seemed to be taking it _|_ to plane of "screen" (not paper)
(well you were rite on that account subhash)

only u need to calc M.O.I. properly and rest is easy

answer would come out to be c) √3g.√2 /l

oops there was no need to solve this as "longly" as i have done

u can observe that there has to be a √2 in the numerator and that cuts down the possibilities to just (a) and (c)
but solving is always good for practice [6]