UPSC NDA 2 2022 General Ability Solved Paper

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Question : 146 of 150

Marks: +1, -0

Which one of the following statements about the speed of sound waves is not correct?

The speed of sound waves in steel is higher than that in water.
The speed of sound waves in air decreases with increase in temperature.
The speed of sound waves in air increases with increase in temperature.
The speed of sound waves in water is higher than that in air.

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