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Doctors Medicines MCQs Q&A

  1. 5 kHz
  2. 12 kHz
  3. 15 kHz
  4. 20 kHz
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1 Answers

Option 1 : 5 kHz

The maximum frequency of the band-limited signal.

fm = 5 kHz

According to the Nyquist sampling theorem, the sampling frequency must be greater than the Nyquist  frequency which is given as

fN = 2 fm = 2 × 5 = 10 kHz

So the sampling frequency fs ≥ fN

fs ≥ 10 kHz

Only the option (A) does not satisfy the condition.

∴ 5 kHz is not a valid sampling frequency.

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