When pressure increases by 1/2 atm, and temperature increases by 10˚C from 100°C, the velocity of sound: (Take vs = 340 m/s)
Correct answer: A. Increases by 0.455 ms−1
- A. Increases by 0.455 ms−1
- B. Decreases by 4.55 ms−1
- C. Increases by 4.55 ms−1
- D. Decreases by 0.455 ms−1
Explanation
When pressure increases by 1/2 atm and temperature increases by 10˚C from 100°C, the velocity of sound increases by 0.455 m/s. This is calculated based on the given values and their impact on the speed of sound. The correct option reflects this increase accurately, while the other options provide incorrect interpretations of the effects of pressure and temperature changes on sound velocity.
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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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