SSC JE Electrical Engineering 2017 Set 1 Paper

Natural Response is the system’s response to initial condition with all external forces set to zero Laplace transform of impulse signal is ‘1’
So output $\mathit{Y}\left(\mathit{t}\right)=\mathit{\delta }\left(\mathit{t}\right)\times \left(\mathit{t}\right)$
$\mathit{L}\left[\mathit{\delta }\left(\mathit{t}\right)\right]=1$
$\left[\mathit{Y}\left(\mathit{S}\right)=\mathit{X}\left(\mathit{S}\right)\right]$
So we get natural response output is equal to system’s response with no external input effect.