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WorksheetsUnit 4 Waves General
Total questions: 15
Worksheet time: 15mins
Which graph correctly shows how the acceleration, a of a particle undergoing SHM varies with its displacement, x from its equilibrium position?
A
B
C
D
In which of the following regions of the electromagnetic spectrum is radiation of wavelength 600 nm located?
microwaves
radio waves
visible light
X-rays
Two waves meet at a point in space. Which of the following properties always add together?
Displacement
Amplitude
Speed
Frequency
One end of a horizontal string is fixed to a wall. A transverse pulse moves along the string as shown.
Which of the following statements are correct for the reflected pulse compared to the forward pulse?
I. It moves more slowly.
II. It has less energy.
III. It is inverted.
I and II only
I and III only
II and III only
I, II and III
A transverse wave travels from left to right. The diagram below shows how, at a particular instant of time, the displacement of particles in the medium varies with position. Which arrow represents the direction of the velocity of the particle marked P?
A
B
C
D
The phenomenon of diffraction is associated with
sound waves only.
light waves only.
water waves only.
all waves.
A pendulum swings back and forth in a circular arc between X and Y.
The pendulum bob is
always in equilibrium.
only in equilibrium at X and Y.
in equilibrium as it passes through the central position.
never in equilibrium.
A beam of unpolarised light is incident on the surface of a liquid and is partially reflected and partially refracted as shown in the picture.
The reflected light is completely horizontally polarized. Which of the following is the refractive index of the liquid?
tan 40°
tan 50°
sin 50°sin 40°
cos 50°sin 40°
Progressive (travelling) waves S and T have the same frequency and are in the same medium. S has amplitude 2.0 m and T has amplitude 4.0 m. What is the ratio of the intensity of T to the intensity of S?
41
21
2
4
Unpolarised light is incident on the surface of a transparent medium. The reflected light is completely plane polarised. The refracted light will be
unpolarised.
partially plane polarised.
completely plane polarised at right angles to the reflected light.
completely plane polarised parallel to the reflected light.
Unpolarised light of intensity I0 is transmitted through a polariser which has a transmission axis at an angle θ to the vertical. The light is then incident on a second polariser with a transmission axis at an angle ϕ to the transmission axis of the first polariser, as shown in the picture.
The intensity of the light that emerges from the second polariser is I. What is the ratio I0I ?
0.25
0.5 cos2 (θ+φ)
0.5 cos2 φ
cos2 θ cos2φ
Two identical waves of wavelength λ leave two sources in phase. The waves meet and superpose after travelling different distances. Which path difference will result in destructive interference?
4λ
2λ
43λ
λ
A wave of period 5.0m s travels through a medium. The graph shows the variation with distance d of the displacement x of points in the medium.
What is the average speed of a point in the medium during one full oscillation?
0 m s–1
4 m s–1
16 m s–1
400 m s–1
Which of these waves cannot be polarised?
microwaves
ultrasound
ultraviolet
X rays
The graph shows the variation of the displacement of a wave with distance along the wave.
The wave speed is 0.50 m s-1.
What is the period of the wave?
0.33 s
1.5 s
3.0 s
6.0 s
