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A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz.

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A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are

(a) 2 MHz only

(b) 2005 kHz and 1995 kHz

(c) 2005 kHz 2000 kHz and 1995 kHz

(d) 2000 kHz and 1995 kHz

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1 Answer

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Best answer

Correct Option (c) 2005 kHz 2000 kHz and 1995 kHz

Explanation:

According to the question

Thus, frequency of the resultant signal is/are carrier frequency fc = 2000 kHz, LSB frequency fc - fm = 2000 kHz -5 kHz = 1995 kHz and USB frequency fc + fm =2005 kHz.

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