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A block of mass \( m \) is connected between two springs (constants \( k_{1} \) and \( k_{2} \) ) as shown in the figure and is made to oscillate, the frequency of oscillation of the system shall be
(a) \( \frac{1}{2 \pi}\left(\frac{m}{k_{1}+k_{2}}\right)^{1 / 2} \)
(b) \( \frac{1}{2 \pi}\left(\frac{k_{1} k_{2}}{\left(k_{1}+k_{2}\right) m}\right)^{1 / 2} \)
(c) \( \frac{1}{2 \pi}\left(\frac{k_{1}+k_{2}}{m}\right)^{1 / 2} \)
(d) \( \frac{1}{2 \pi}\left(\frac{\left(k_{1}+k_{2}\right) m}{k_{1} k_{2}}\right)^{1 / 2} \)
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