The sound which stimulates our ear is known as:
Correct answer: A. Sonic
- A. Sonic
- B. Infrasonic
- C. Ultrasonic
- D. Tidal
Explanation
"Sonic" refers to audible frequencies (roughly 20 Hz to 20 kHz) that stimulate human hearing; infrasonic/ultrasonic are outside audible range.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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