Two springs of equal lengths and equal cross-sectional areas are made of materials whose Young's moduli are in the ratio of 3:2. They are suspended and loaded with the same mass. When stretched and released, they will oscillate with time periods in the ratio of
Force constant k=Fl=YAL where l is the extension in the spring of original length L and cross-sectional area A when a force F = Mg is applied.
Now, the time period of oscillation is given by T=2π√=2π√
Hence, the correct choice is (a).