A) \[\text{(}1000\pm 5\text{) }kHz\]
B) \[(1000\pm 7.5)kHz\]
C) \[\text{(}1000+~10\text{) }kHz\]
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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