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
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 do the air particles , when the sound travels through air?
Vibrate along the direction of wave propagation
Vibrate but not in any fixed direction
Vibrate perpendicular to the direction of wave propagation
Do not vibrate
What is the source of all wave motion?
Vibrating object
Region of variable high and low pressure
Wave pattern
Harmonic object
In which direction will the particles move, If a transverse wave is a transporting energy from east to west?
East to west only
Both eastward and westward
North to south only
Both northward and southward
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
An FM radio station instructs your radio receiver how to move its speaker cone by varying the.
Amount of electric charge it pushes up and down its antenna.
Amplitude of the radio wave it produces.
Strength of the electric and magnetic fields in the radio wave it produces.
Frequency of the radio wave it produces.
What does the height of a water wave represent?
Wavelength
Amplitude
Velocity
Frequency
A sound source sends waves of 400Hz.It produces waves of wavelength 2.5 m. Calculate the velocity of sound.
100m/s
1000m/s
10000m/s
3000km/s
What is the amplitude of thunder?
Loudness
Lightning
Pulses do not have amplitude
