1
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
A signal x(t) = 100 cos $$(24\pi \times {10^3})$$ t is ideally sampled with a sampling period of 50 $$\mu \sec $$ and then passed through an ideal low pass 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
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