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  • A plane progressive wave is given by . What is period of th

A plane progressive wave is given by y=2 \cos 2 \pi(330 t-x). What is period of the wave?

Option: 1

\frac{1}{330} s


Option: 2

2 \pi \times 330 \mathrm{~s}


Option: 3

(2 \pi \times 330)^{-2} s


Option: 4

\frac{6.284}{330} s


Answers (1)

best_answer

Given equation, y=2 \cos 2 \pi(330 t-x)

On comparing with y=A \cos (\omega t-x) we get

\omega=2 \pi \times 330 \left[\omega=\frac{2 \pi}{T}\right]

T=\frac{1}{330} \mathrm{~s}

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