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Q.

When a sound wave of frequency 300 Hz passes through a medium the maximum displacement of a particle of the medium is 0.1 cm. The maximum velocity of the particle is equal to

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a

30 $π$ cm/sec

b

30 cm/sec

c

60 cm/sec

d

60 $π$ cm/sec

answer is A.

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Detailed Solution

$v_{\max} = aω = a \times 2 πn = 0 .1 \times 2 π \times 300 = 60 π cm / \sec$

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