Air Resonance

Ernest carry out a resonance experiment by vibrating a tuning fork over a column of air as shown in the picture. The water in the tube is reduced little by little until the sound of the tuning fork is loud first when the condition is like picture (2), and the second loud sound is heard when the condition is like picture (3). If the speed of sound in air is 340 m/s, then the frequency of the tuning fork is ....

• 340 Hz

• 400 Hz

• 425 Hz

• 500 Hz

The first resonance in the resonator tube occurs when the length of the air column is 4 cm. The next resonance occurs if the length of the air column is...

• 48 cm

• 24 cm

• 12 cm

• 10 cm

In the resonance experiment with a resonator tube, it turns out that the first resonance occurs if the length of the air column in the tube is 20 cm above the water surface, then the second resonance will occur if the length of the air column in the tube is...

• 60 cm

• 70 cm

• 80 cm

• 85 cm

The first resonating sound source is at an air column height of 75 cm. The wavelength of the air column when it resonates the second time is...

• 3 m

• 2,5 m

• 2,25 m

• 2 m

The length of air column at the second resonance is 30 cm. If the frequency of the sound is 850 Hz, then the speed of sound is .....

• 400 m/s

• 380 m/s

• 350 m/s

• 340 m/s

An air column is 140 cm long and a fourth resonance occurs. A tuning fork has a frequency of 425 Hz, the speed of propagation of the sound wave is...

• 310 m/s

• 320 m/s

• 330 m/s

• 340 m/s

If the first resonance in an air column occurs at a height of 60 cm, what will be the length of the air column when it resonates for the third time?

• 1.5 m

• 3 m

• 1 m

• 0.9 m

During a resonance experiment with a resonator tube, if the first resonance occurs at a length of 25 cm above the water surface, what will be the length of the air column for the fourth resonance?

• 1,75 m

• 1 m

• 0,85 m

• 0.9 m

If an air column produces a fifth resonance at a length of 630 cm, and the frequency of the tuning fork is 150 Hz, what is the speed of propagation of the sound wave?

• 300 m/s

• 400 m/s

• 420 m/s

• 400 m/s

If the length of an air column at the third resonance is 40 cm and the frequency of the sound is 250 Hz, what is the speed of sound?

• 50 m/s

• 80 m/s

• 90 m/s

• 100 m/s