A sound note emitted from a certain source has velocity of 330 m/s in air and 1050 m/s in water. If the wavelength to sound note in air is 2M, the wavelength in water is.
Answers
Answer:
The wavelength of sound in water is 6.4 m.
Explanation:
We have the equation,
Velocity / speed = frequency × wavelength
v = γλ
The velocity of sound in air, v₁ = 330 m/s
The wavelength of sound in air, λ₁ = 2 m
∴ The frequency of the sound wave, γ = v₁ / λ₁
= 330 / 2
γ = 165 Hz
The frequency of sound is independent of the medium. So the frequency of sound in water will also be 165 Hz.
The velocity of sound in water, v₂ = 1050 m/s
∴ The wavelength of sound in water, λ₂ = v₂ / γ
= 1050 / 165
λ₂ = 6.4 m