Which of the following statements is NOT correct ........

General Science (Easy) Chemistry

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Which of the following statements is NOT correct?

The velocity of sound in the air decreases as the humidity increases.

The velocity of sound in air is independent of pressure.

The velocity of sound in air increases with the increase of temperature.

The velocity of sound in air is not affected by the change in frequency

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Explanation:

- Option 1: The velocity of sound in air actually increases with higher humidity. Moist air is less dense, which allows sound to travel faster. Thus, this statement is not correct.

- Option 2: The velocity of sound in air is indeed independent of pressure. Sound speed depends primarily on temperature and humidity.

- Option 3: As temperature increases, sound velocity increases too. Warmer air has molecules moving faster, aiding sound wave propagation.

- Option 4: The velocity of sound in air is indeed not affected by frequency changes. It's determined by medium properties like temperature and humidity.