Two springs are connected on the opposite side of a mass m, kept on a frictionless surface. The springs are placed horizontally and, their other ends are fixed on rigid supports. If K1 and K2 are the force constants of the two springs, the frequency of oscillation of mass m is
1
\(\dfrac{1}{2\pi}\sqrt{\dfrac{k_1 k_2}{m}}\)
2
\(\dfrac{1}{2\pi}\sqrt{\dfrac{k_1+ k_2}{m}}\)
3
\(\dfrac{1}{2\pi}\sqrt{\dfrac{k_1- k_2}{m}}\)
4
\(\dfrac{1}{2\pi}\sqrt{\dfrac{k_1 k_2}{k_1+k_2}\cdot \dfrac{1}{m}}\)