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Q.

A plane progressive wave is given by y = 2cos2π(330t - x)m. The frequency of the wave is:

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a

660 Hz

b

340 Hz

c

165 Hz

d

330 Hz

answer is C.

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Detailed Solution

y=2cos⁡2π(330t−x)my=Acos⁡(ωt−kx)
By comparing ω=2π×330
2πf = 2π x 330
f = 330

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