A. 256Hz tuning fork creates sound which travels through the air at 344m/s. Calculate the distance between adjacent rarefactions.
67.2cm
1.34m
2.69m
88.0m
A standing wave with 7loops is generated in a string. If the waves travel at 17.5 m/s with a frequency of 1.40 × 102Hz. How long is the string?
0.875m
8m
0.438m
56m
The distance between the first and fifth nodes in a standing wave is 40.0 cm. If the waves travel at 2.50 m/s, What is the frequency of the waves?
25Hz
12.5Hz
125Hz
20Hz
The frequency of a wave travelling at a speed of 500 m/s is 25Hz. What is its time period?
20 s
0.05 s
25 s
0.04 s
What is called the persistence of audible sound due to the successive reflections from the surrounding objects even after the source has stopped to produce that sound?
Reflection
Echo
Reverberation
Rarefaction
What is the amplitude of thunder?
Loudness
Lightning
Pulses do not have amplitude
Frequency
What happens to the speed of the light in glass?
It becomes the speed of sound
It goes faster than in air
It goes slower than in air.
Light does not travel through glass
Which of the following will remain unchanged when a sound wave travels in air or in water?
Wavelength and frequency
Speed and frequency
Amplitude
What are the units of frequency?
Cycles per second or Hertz
Meters per second or Hertz
Cycles per meter or Avis
Meters per second or Avis
What is the source of all wave motion?
Vibrating object
Region of variable high and low pressure
Wave pattern
Harmonic object