Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveInterferenceHard2 minPYQ_2020

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Two coherent sound sources $A$ and $B$ produce a sound of wavelength $λ$ . If at $t = 0$ a detector starts moving with constant velocity $v_{0}$ from point $O$ along y-direction, then the minimum time, after which it detects the sound of maximum intensity, is $(D > > λ)$

Options:

Answer:

Solution:

$4 λ c o s θ = 3 λ$

$c o s θ = \frac{3}{4}$

$\Rightarrow t a n θ = \frac{y}{D}$

$\Rightarrow y = \frac{\sqrt{7} D}{3}$

$t = \frac{\sqrt{7} D}{3 v_{0}}$

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Interference

⏱ 2mℹ️ Source: PYQ_2020

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