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Question

For sound waves in air with frequency 1000 Hz, a displacement amplitude of 1.2×108 m produces a pressure amplitude of 3.0×102 Pa. What is the wavelength of these waves? (Provided Bulk modulus of Air = 1.42× 105Pa)


A

0.3 m

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B

0.4 m

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C

0.36 m

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D

None of these

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