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Q.

The equation of a sound wave is given as: $y = 0.0015 \sin (62.4 x + 316 t)$
The wavelength of this wave IS

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a

0.3 unit

b

0.4 unit

c

0.1 unit

d

0.2 unit

answer is D.

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Detailed Solution

$y = 0.0015 \sin (62.4 x + 316 t)$

On comparing with $y = A \sin (ω t + k x)$

$\begin{array}{l} ω = 316, k = 62.4 \\ \Rightarrow k = \frac{2 π}{λ} = 62.4 = λ = 0.1 unit \end{array}$

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