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Progressive wave of sound is represented...

Progressive wave of sound is represented by `y =A sin [400 pi t -pi x // 6.85 ] ` where x is in m and t is in s. frequency of the wave will be

A

200 Hz

B

400 Hz

C

500 Hz

D

600 Hz

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The correct Answer is:
B
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TARGET PUBLICATION-WAVE MOTION -MCQ 7.1
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