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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveWavesHard2 minQB

PhysicsHardnumerical

A wave travels through rod 1 (1 m, speed 5000 m/s) and rod 2 (speed 2500 m/s) in the same time as through rod 3 (1.2 m, speed 3000 m/s). Find the length of rod 2.

Answer:

0.50

Solution:

$t_{3} = 1.2/3000 = 4 \times 1 0^{- 4}$ s, $t_{1} = 2 \times 1 0^{- 4}$ s, so $t_{2} = 2 \times 1 0^{- 4}$ s and $L_{2} = 2500 \times 2 \times 1 0^{- 4} = 0.5$ m.

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves

⏱ 2mℹ️ Source: QB

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