Question

The equation of sound wave is $y=0.0015sin(62.4x+316t)$. Find the wavelength of this wave

• A. 0.2 unit
• B. 0.1 unit
• C. 0.3 unit
• D. None of these

Answer 1

Answer: (B)

0.1 unit

For a wave represented by $y=Asin(kx+\omega t)$

$k=\frac{2\pi }{\lambda }$ and $\omega =\frac{2\pi }{T}$

Thus $\lambda =\frac{2\pi }{k}=\frac{2\times \pi }{62.4}$

$=0.1unit$

Hence correct answer is option B.