The wavelength of sound in air is 1.5 m and that in liquid is 2 m. If the
velocity of sound in air is 330 m/s, the velocity of sound in liquid is ...
a) 330 m/s
b) 440 m/s
c) 495 m/s
d) 660 m/s
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3
Answer:
❣️330 m/s is the correct answer....!!
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The velocity of sound in liquid is 440 m/s.
Given:
The wavelength of sound in air λ1 = 1.5 m.
The wavelength of sound in liquid λ2 = 2 m.
The velocity of sound in air v1 = 330 m/s.
To Find:
The velocity of sound in liquid v2.
Solution:
Formula: v = f x λ
v1 = f x λ1
330 = f x 1.5
f = 330 / 1.5
f = 220 Hz.
The frequency of sound does not change with medium. Therefore, we can use the same frequency found previously for the system in the medium as well.
v2 = f x λ2
v2 = 220 x 2
v2 = 440 m/s.
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