Full range of audibility in audio frequency oscillator

Q.  The full range of audibility in audio frequency oscillator is
- Published on 10 Nov 15

a. 0 to 20 Hz
b. 20 Hz to 2 kHz
c. 20 Hz to 20 kHz
d. 20 Hz to 20 MHz

ANSWER: 20 Hz to 20 kHz

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