A U-tube having unequal arm-lengths has water in it. A tuning fork of frequency 440 Hz can set up the air in the shorter arm in its fundamental mode of vibration and the same tuning fork can set up the air in the longer arm in its first overtone vibration. Find the length of the air columns. Neglect any end effect and assume that the speed of sound in air = 330 m sā1.
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Answer:
si Permian overnight go outside indulging exhaust until revisited
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Explanation:
for short arm
f=v/4l
440=330/4l
l=0.187m
for long arm
f=3v/4l
l=3Ć330/4Ć440
l=0.56m
hope that help
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