The speed of sound does not depend upon:
Correct answer: D. Pressure
- A. Density
- B. Elasticity
- C. Temperature
- D. Pressure
Explanation
In gases at fixed temperature, sound speed depends on temperature and molecular properties (and indirectly on density and elasticity). Pressure alone (at constant temperature) does not change sound speed significantly; hence (D) is the intended choice.
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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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