For a bit-rate of 8 kbps the best possible values of the

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For a bit-rate of 8 kbps the best possible values of the transmitted frequencies in a coherent binary FSK system are

1. 16 kHz and 20 kHz
2. 20 kHz and 32 kHz
3. 20 kHz and 40 kHz
4. 32 kHz and 40 kHz

Correct Option: D

Since, bandwidth of signal FSK
= 4f_b = 4 × 8 = 32 kHz