The velocity of a sound wave at 27oC is 360ms-1. Its velocity at 127oC is

Physics

JAMB 1998

A. 120√3 ms^-1
B. 240 ms^-1
C. 240√3 ms^-1
D. 720√3 ms^-1

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Correct Answer: Option C

Explanation

Velocity \(\alpha \sqrt{temperature}\)

\(\frac{V_1}{V_2} = \sqrt{\frac{T_1}{T_2}}\)

therefore, \(\frac{360}{V_2} = \sqrt{\frac{27 + 273}{127 + 273}}\)

\(V_2 = 240\sqrt{3}\)m/s

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The velocity of a sound wave at 27oC is 360ms-1. Its velocity at 127oC is

Correct Answer: Option C

Explanation

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