WBJEE · Physics · Waves and Sound
A plane progressive wave is given by \(y=2 \cos 6.284(330 \mathrm{t}-\mathrm{x})\). What is period of the wave?
- A \(\frac{1}{330} \mathrm{~S}\)
- B \(2 \pi \times 330 \mathrm{~S}\)
- C \((2 \pi \times 330)^{-1} \mathrm{~S}\)
- D \(\frac{6.284}{330} \mathrm{~S}\)
Answer & Solution
Correct Answer
(A) \(\frac{1}{330} \mathrm{~S}\)
Step-by-step Solution
Detailed explanation
Hints: \(y=2 \cos 2 \pi(330 t-x)\) \(\omega=2 \pi \times 330\) \(\therefore \mathrm{T}=\frac{1}{330} \mathrm{~s}\)
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