The transfer function of a system is given by,
$\frac{V_{0}(s)}{V_{i}(s)}=\frac{1-s}{1+s}$
Let the output of the system be $v_{0}(t)=V_{m} \sin (\omega t + \varphi )$ for the input, $v_{i}(t)=V_{m} \sin (\omega t )$. Then the minimum and maximum values of $\varphi$ (in radians) are respectively
- $\frac{-\pi}{2}$ and $\frac{\pi}{2}$
- $\frac{-\pi}{2}$ and $0$
- $0$ and $\frac{\pi}{2}$
- $-\pi$ and $0$