Which one of the following statements about the speed of sound waves is <strong>NOT</strong> correct?
- A. The speed of sound waves in steel is higher than that in water.
- B. The speed of sound waves in air decreases with increase in temperature. ✓
- C. The speed of sound waves in air increases with increase in temperature.
- D. The speed of sound waves in water is higher than that in air.
Correct Answer: B. The speed of sound waves in air decreases with increase in temperature.
Explanation
The speed of sound in a gas increases with an increase in temperature. Therefore, the statement that it decreases with an increase in temperature is incorrect.
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