A) \[2010kHz,1990kHz\]
B) \[2000kHz,\text{ }1990kHz\]
C) \[2010kHz,\text{ }2000\text{ }kHz\]
D) \[2100kHz,\text{ }1900kHz\]
Correct Answer: A
Solution :
[a] Given, \[{{\upsilon }_{m}}=10\,kHz\] \[{{\upsilon }_{c}}=2\,MHz=2000\,kHz\] Side band frequencies are \[{{\upsilon }_{USB}}={{\upsilon }_{c}}+{{\upsilon }_{m}}=(2000+10)kHz=2010\,kHz\] \[{{\upsilon }_{LSB}}={{\upsilon }_{c}}-{{\upsilon }_{m}}=(2000-10)kHz=1990\,kHz\]
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