Question
A sound is travelling in air at a speed of 343 ms−1. The wavelength of the sound wave is 0.1 cm. Find the frequency of the sound wave.
Answer: Option B
:
B
Given:
Speed of the sound, v=343ms−1
Wavelength, λ=0.1cm=0.001m
Let frequency be f.
Speed of the wave is given as the product of frequency and wavelength.
v=fλ
⟹f=343ms−10.001m
f=343000Hz
Frequency of the sound wave is 343000Hz.
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:
B
Given:
Speed of the sound, v=343ms−1
Wavelength, λ=0.1cm=0.001m
Let frequency be f.
Speed of the wave is given as the product of frequency and wavelength.
v=fλ
⟹f=343ms−10.001m
f=343000Hz
Frequency of the sound wave is 343000Hz.
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