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Which of the following electromagnetic signals has a frequency range of 30kHz-3MHz?

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+1 vote
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in Digital Signal Processing by (829k points)
Which of the following electromagnetic signals has a frequency range of 30kHz-3MHz?

(a) Radio broadcast

(b) Shortwave radio signal

(c) RADAR

(d) Infrared signal

I got this question in class test.

My question is based upon Frequency Analysis of Discrete Time Signal in section Frequency Analysis of Signals and Systems of Digital Signal Processing

1 Answer

+1 vote
by (1.4m points)
Correct choice is (a) Radio broadcast

To elaborate: Radio broadcast signal is an electromagnetic signal which has a frequency range of 30kHz-3MHz.

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