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    Question

    What is the speed of sound in air at room temperature

    (approx)?┬а┬а
    A 150 m/s Correct Answer Incorrect Answer
    B 343 m/s Correct Answer Incorrect Answer
    C 500 m/s Correct Answer Incorrect Answer
    D 1000 m/s Correct Answer Incorrect Answer

    Solution

    At room temperature (~20┬░C), speed of sound in air is around 343 m/s.┬а┬а This speed increases in solids and liquids and decreases at higher altitudes.┬а┬а It is much slower than light, which travels at 3 ├Ч 108, m/s.┬а┬а That's why we see lightning before hearing thunder.

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