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Q.

What would be the wavelength of a sound wave in iron (V = 4950 m/sec) if its wavelength was 1.4 m in air in which its speed was 330 m/sec.

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An Intiative by Sri Chaitanya

a

0.29

b

21 m

c

17 m

d

18 m

answer is B.

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Detailed Solution

v1v2=λ1λ2⇒λ2=v2v1λ1⇒λ2=4950330×1.4=21m

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