Question
A sound wave having a wavelength of 2 cm is travelling in water. If the velocity of sound in water is 1600 ms−1. What is the frequency of the sound wave?
Answer: Option B
:
B
Given:
Speed of sound wave, v=1600 ms−1
Wavelength, λ=2 cm=0.02 m
Let f be the frequency of the wave.
Speed of sound is given by:
v=fλ
f=1600 ms−10.02 m=80000 Hz.
Frequency of the sound wave is 80000 Hz.
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:
B
Given:
Speed of sound wave, v=1600 ms−1
Wavelength, λ=2 cm=0.02 m
Let f be the frequency of the wave.
Speed of sound is given by:
v=fλ
f=1600 ms−10.02 m=80000 Hz.
Frequency of the sound wave is 80000 Hz.
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