MCQ
Change in temperature of the medium changes:
- AFrequency of sound waves.
- BAmplitude of sound waves.
- CWavelength of sound waves.
- DLoudness of sound waves.
✓
Answer
- Wavelength of sound waves.
Explanation:
Speed of sound wave in amedium $\text{v}=\sqrt{\frac{\gamma\ \text{RT}}{\text{M}}}.$ here $\gamma,\text{R}$ and M are constent.
Hence, $\text{v}\propto\sqrt{\text{T}}$ (where T is tempreature of the medium)
It mence when temprature changes, speed also changes.
As, $\text{v}=\text{f}\lambda,$ where f is frequency and $\lambda$ is wavelength.
As frequency (f) remains fixed, $\text{v}\propto\lambda$ or $\lambda$ hence wavelength $(\lambda)$changes.
Hence verifies the option (c).
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