An analog signal is sampled at a rate of 20kHz. Calculate the value of message signal frequency,? for the following cases:i) The gap between two samples in the sample spectrum is 500Hz. ii) The gap...

An analog signal is sampled at a rate of 20kHz. Calculate the value of message signal frequency,? for the following cases: i) The gap between two samples in the sample spectrum is 500Hz. ii) The gap between two samples in the sample spectrum is 2kHz iii) If the sampled spectrum is passed through a low pass filter for reconstruction, which case mentioned in part(i) and (ii) requires less stringent requirement for the low pass filter? Justify your answer.