Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveMiscellaneousEasy2 minPYQ_2007

PhysicsEasysingle choice

A sound absorber attenuates the sound level by $20 dB$ . The intensity decreases by a factor of

Answer:

Solution:

$B_{1} = 10 lo g (\frac{I}{I _{0}}) B_{2} = lo g (\frac{I ^{'}}{I _{0}})$ given $B_{2} - B_{1} = 20$ $20 = 10 lo g (\frac{I ^{'}}{I}) I^{'} = 100 I$

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2007

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