The speed of sound in air at 20°C is approximately MCQ with Answer and Explanation

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The speed of sound in air at 20°C is approximately

A. 360 m/s

B. 343 m/s

C. 330 m/s

D. 300 m/s

Answer: Option B

Solution (By JKSSB Mock Tests)

At 0°C ≈ 331 m/s, increases with temperature. At 20°C ≈ 343 m/s.

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