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A mass is suspended separately by two different springs in successive order then time periods is \( t_{1} \)
\( P \) and \( t_{2} \) respectively. If its is connected by both W. spring as showning figure then time period is \( t_{0} \), the correct relation is :-
(1) \( \mathrm{t}_{0}^{2}=\mathrm{t}_{1}^{2}+\mathrm{t}_{2}{ }^{2} \)
(2) \( t_{0}{ }^{-2}=t_{1}{ }^{-2}+t_{2}-2 \)
(3) \( t_{0}^{-1}=t_{1}^{-1}+t_{2}^{-1} \)
(4) \( t_{0}=t_{1}+t_{2} \)
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