Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
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# When We Clap Our Hands, the Sound Produced is Best Described by - Physics

MCQ

When we clap our hands, the sound produced is best described by Here p denotes the change in pressure from the equilibrium value.

#### Options

• $p = p_0 \sin\left( kx - \omega t \right)$

• $p = p_0 \sin kx \cos \omega t$

• $p = p_0 \cos kx \sin \omega t$

• $p = \sum p_{0n} \sin \left( k_n x - \omega_n t \right)$

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#### Solution

$p = \sum p_{0n} \sin \left( k_n x - \omega_n t \right)$

When we clap, there is a change in pressure, which sets a disturbance and forms a wave. However, this variation is not uniform every time we clap (unlike in the case of a sound wave). Hence, we sum up all the disturbances.

Concept: Wave Motion
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#### APPEARS IN

HC Verma Class 11, 12 Concepts of Physics 1
Chapter 16 Sound Waves
MCQ | Q 2 | Page 351
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