A) \[(1000\pm 5)kHz\]
B) \[(1000\pm 7.5)kHz\]
C) \[(1000\pm 10)kHz\]
D) \[(1000\pm 15)kHz\]
Correct Answer: A
Solution :
Carrier frequency \[{{f}_{c}}\] is many times greater than signal frequency \[{{f}_{m}}\]. Hence, the sideband frequencies are generally close to the carrier frequency. It may be seen that a carrier modulated by a signal is equivalent to 3 simultaneous components the carrier itself and two other sidebands, ie, \[{{f}_{c}}+{{f}_{m}}\] and \[{{f}_{c}}-{{f}_{m}}\].
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