Question

if the distance between four consecutive compression of a sound wave is 9cm then the wavelength of wave is equal to

Answer 1

Answer:

4.5 cm

Explanation:

distance between consecutive compression is wavelength so distance between 4 compressions is 2xwavelength

Answer 2

The wavelength of wave, $\lambda$ = 4.5 cm

Explanation:

Let the distance between two successive compressions $=\lambda$

∴ The distance between four successive compressions $=2\lambda$

To find,  the wavelength of wave, $\lambda=?$

According to question,

$2\lambda=9$

⇒$\lambda=\dfrac{9}{2}$

⇒ $\lambda$ = 4.5 cm

∴ The wavelength of wave, $\lambda$ = 4.5 cm

Hence, the wavelength of wave, $\lambda$ = 4.5 cm