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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveWavesHard2 minQB

PhysicsHardinteger

A ship at 7.2 km/h sounds its siren towards a hill and hears the echo after 5 s. It sounds again 170 s after the first sounding and hears the echo after 3 s. Find the speed of sound. (answer in $m/s$ ).

Answer:

338

Solution:

$u = 2$ m/s. $(v + u) \times \frac{5 - 3}{2} = u \times 170 = 340$ , so $v + u = 340$ and $v = 338$ m/s.

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves

⏱ 2mℹ️ Source: QB

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