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
What does the height of a water wave represent?
Wavelength
Amplitude
Velocity
Frequency
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
A sound wave is a mechanical wave, not an electromagnetic wave. Why?
Particles of the medium move perpendicular to the direction of energy transport.
A sound wave transports its energy through a vacuum.
Particles of the medium regularly and repeatedly oscillate about their rest position.
A medium is required in order for sound waves to transport energy
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 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
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
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 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
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
