MCQ
The equation of a sound wave is $y = 0.0015\sin (62.4x + 316\,t)$ The wavelength of this wave is ..... $unit$
- A$0.2$
- ✓$0.1$
- C$0.3 $
- DCannot be calculated
✓
Answer
Correct option: B.
$0.1$
b
(b) Compare with $y = a\sin (\omega \,t - kx)$
(b) Compare with $y = a\sin (\omega \,t - kx)$
We have $k = \frac{{2\pi }}{\lambda } = 62.4$
==> $\lambda = \frac{{2\pi }}{{62.4}} =0.1$
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