A Vibrating Tuning Fork of 300 Hz Is Held Above

question 7

Multiple Choice

A vibrating tuning fork of 300 Hz is held above a tube filled with water. The first resonance is heard when the water level is lowered by 26.1 cm. A second tuning fork of 400 Hz is held above the tube, and its first resonance occurs when the water level is lowered by 19.3 cm from the top. Calculate a value for the speed of sound. Hint: Remember the small end correction L at the top of the tube.)

• A) 333 m/s
• B) 343 m/s
• C) 325 m/s
• D) 315 m/s
• E) 338 m/s