Q31
A signal x(t) = 100cos(24π × 103)t is ideally sampled with a sampling period of 50 psec and then passed through an ideal lowpass filter with cutoff frequency of 15 kHz. Which of the following frequencies is/are present at the filter output?
A.
12 kHz only
B.
8 kHz only
C.
12 kHz and 9 kHz
D.
12 kHz and 8 kHz
AnswerAnswer: Option D
Solution
Answer: Option D
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