SSC JE Electrical Engineering 2017 Set 4 Paper

For a prototype low pass fitter, the series and shunt element are inductive and capacitive. Low pas fitter, Passes signal with low frequency and attenuates signal with high frequency.for $\mathrm{f}=0,{\mathit{X}}_{\mathit{L}}=2\mathit{\pi }\mathit{\omega }\mathit{L}$
${\mathit{X}}_{\mathit{C}}=\frac{1}{2\mathit{\pi }\mathit{\omega }\mathit{c}}$
${\mathit{X}}_{\mathit{C}}$ = open circuit
${\mathit{V}}_{\mathrm{out}}={\mathit{V}}_{\mathrm{in}}$
for $\mathrm{f}=\mathit{\infty },{\mathit{X}}_{\mathit{C}}=\mathit{\infty }$ open circuit
${\mathit{V}}_{\mathrm{out}}=0.$