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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveWavesMedium2 minQB

PhysicsMediuminteger

A smoked plate falls vertically under gravity. A tuning fork traces a wave on it. It is found that the lengths of two consecutive groups of 10 waves are 5.143 cm and 6.64 cm respectively. What is the frequency of the fork? (answer in $Hz$ ).

Answer:

256

Solution:

Each group takes $t = 10/ f$ . $Δ s = g t^{2}$ : $(6.64 - 5.143) \times 1 0^{- 2} = \frac{9.8 \times 100}{f ^{2}}$ , so $f = 10 9.8/0.01497 = 256$ Hz.

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves

⏱ 2mℹ️ Source: QB

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