If a simple harmonic motion is represented by $\frac{d^2x}{dt^2} + \alpha x = 0$, its time period is (1) $\frac{2\pi}{\alpha}$ (2) $\frac{2\pi}{\sqrt{\alpha}}$ (3) $2\pi\alpha$ (4) $2\pi\sqrt{\alpha}$
If a simple harmonic motion is represented by $\frac{d^2x}{dt^2} + \alpha x = 0$, its time period is\\
(1) $\frac{2\pi}{\alpha}$\\
(2) $\frac{2\pi}{\sqrt{\alpha}}$\\
(3) $2\pi\alpha$\\
(4) $2\pi\sqrt{\alpha}$