A Vibrating Tuning Fork Is Held Above a Tube Filled $\Delta$

question 65

Multiple Choice

A vibrating tuning fork is held above a tube filled with water.The first two resonances occur when the water level is lowered by 14.2 cm and 44.2 cm from the top of the tube.If there is a small end correction that adds a small extra length $\Delta$ L? to the effective length of the air column,calculate the frequency of the tuning fork.Assume the speed of sound to be 330 m/s.

• A)560 Hz
• B)581 Hz
• C)550 Hz
• D)1100 Hz
• E)1120 Hz

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