Effect of a zero on the imaginary axis: A zero on the imaginary axis $($frequency axis!$)$ can

completely eliminate the frequency corresponding to the location of the zero. Observe

the magnitude response of a system with a single zero, when the location of the zero is

at s $=$j$2$$,$ s $=$j$20$$,$ s $=$j$200$ and s $=$j$2000$$.$ Report on your observations,

especially about how you can design a filter to stop a specific frequency component from

appearing at the output.