Which statement does not describe the property of travelling waves?
Energy and matter are transferred by travelling waves
The direction of motion of a travelling wave is the direction of energy transfer
Travelling waves travel away from the source of oscillation
The oscillations can propagate through a medium or in a vacuum depending on the type of travelling wave
The speed of a wave c depends on its frequency f and wavelength λ and is given by the equation:
c = fλ
Identify the correct units for the quantities given in the wave equation.
|
Wave speed c |
Frequency f |
Wavelength λ |
|
|
A. |
m s−2 |
J |
m |
|
B. |
m s−1 |
Hz |
m2 |
|
C. |
m s | Hz s−1 | ml |
|
D. |
m s−1 |
Hz |
m |
A sound wave has a frequency f of 50 Hz.
Identify the correct expression showing the time period T of the wave.
50 T
2 × 50
Identify the example that is not a transverse wave.
Sound wave
Microwave
Water wave
Sunlight
Which of the following gives regions of the electromagnetic spectrum in order of increasing frequency?
Gamma ray, visible, radio wave
X-ray, microwave, ultraviolet
Radio wave, infrared, microwave
Infrared, ultraviolet, x-ray
An electromagnetic wave is generated by a combined oscillation of electric and magnetic fields. These fields oscillate perpendicular to each other and to the direction of the motion of the wave. The diagram shows the oscillations of an electromagnetic wave. The electric field oscillates in plane P.
In relation to the diagram, identify the correct labels for Q and R.
|
Q |
R |
|
|
A. |
Motion |
Magnetic field |
|
B. |
Electric field |
Motion |
|
C. |
Magnetic field | Electric field |
|
D. |
Magnetic field |
Motion |
Which of the following has a frequency lower than that of visible light?
Ultraviolet
Infrared
Gamma ray
X-ray
Which frequency of sound wave would a human be able to hear?
2 Hz
200 Hz
200 kHz
2000 kHz
Which of the following sound waves would give the highest volume?
Which of the following sound waves would produce the highest pitch?
