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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveBeatsEasy2 minPYQ_2006

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Two sound waves with wavelengths 5.0 $m$ and $5.5 m$ respectively, each propagate in a gas with velocity $330 m / s$ . We expect the following number of beats per second:NEET 2006

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Answer:

Solution:

$Frequency = \frac{Velocity}{Wave length} V_{1} = \frac{V}{λ _{1}} = \frac{330}{5} = 66 H_{2}$ and $V_{2} = \frac{V}{λ _{2}} = \frac{330}{5 \cdot 5} = 60 H_{2}$ $∴$ Number of beats per second $= V_{1} - V_{2} = 60 - 60 = 6$ .

Stream:NEETSubject:PhysicsTopic:Sound WaveSubtopic:Beats

⏱ 2mℹ️ Source: PYQ_2006

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