1.

A Body of mass (m) is suspended from two light springs of spring constants k_(1) and k_(2) (lt k_(1)) separately.The periods of vertical oscillations are T_(1) and T_(2) respectively. Now the same body is suspended from same two springs which are first connected in series and then in parallel. The period of vertical oscillationsare T_(S) and T_(P) respectively.

Answer»

<P>`T_(P) LT T_(1) lt T_(2)` for `k_(1) gt k_(2)`
`(1)/(T_(P)^(2))=(1)/(T_(1)^(2))+(1)/(T_(2)^(2))`
`T_(S)^(2)=T_(1)^(2)+T_(2)^(2)`
`sqrt(T_(S))=sqrt(T_(1))+sqrt(T_(2))`.

Answer :B::C


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