Question

If the distance between four consecutive compressions of a sound wave is 4 cm, then the wavelength of the wave is equal to

• A. $\frac{3}{4}cm$
• B. $1cm$
• C. $2cm$
• D. $\frac{4}{3}cm$

Answer 1

The correct option is D $\frac{4}{3}cm$

Let the distance between two consecutive compressions be x. Distance between four consecutive compressions, AB = 4 cm ∴

Distance between two consecutive compressions, $x=\frac{4}{3}cm$



The distance between two consecutive compressions or two consecutive rarefactions is known as wavelength of the wave. ⇒
$\Rightarrow \text{Wavelength of the wave,}\lambda =x=\frac{4}{3}cm$

Hence, the correct answer is option (d).