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WorksheetsP3 Revision Waves Final 1
Total questions: 55
Worksheet time: 2hrs 50mins
Which type of wave is illustrated in the diagram?
Longitudinal
Slinky
Transverse
Water
Which of the following are examples of transverse waves?
Gamma waves
Ultrasonic waves
Ultraviolet waves
Sound waves
Visible light
Which letter(s) represents the wavelength of the wave?
a
b
c
d
e
What is the amplitude of this wave?
0.20 m
0.40 m
2.0 s
4.0 s
What is the time period of this wave?
0.20 m
0.40 m
2.0 s
4.0 s
Which of the following is the wave equation used to find wave speed?
T = 1/f
f = 1/T
v = f/λ
V = f x λ
A gamma ray has a frequency of 1.0 x 10 20 Hz and travels at 3.0 x 10 8 m/s. What is it’s wavelength?
3.3 x 10 -13 m
3.0 x 10 -12 m
3.3 x 10 11 m
3.0 x 10 12 m
Max is sitting in his boat observing water waves enter the harbour. He counts 20 waves passing into the harbour in one minute. What is the frequency?
0.33 Hz
3.0 Hz
20 Hz
1200 Hz
Which of the following is the correct order for the electromagnetic spectrum shown above?
Gamma, X-ray, UV, Visible, IR, Microwave, Radio
Radio, IR, Microwave, Visible, UV, X-ray, Gamma
Gamma, UV, X-ray, Visible, IR, Microwave, Radio
Radio, Microwave, IR, Visible, UV, X-ray, Gamma
Which of the following types of electromagnetic radiation has the largest frequency?
Gamma
X-ray
Radio
Microwave
Which of the following is a danger of UV radiation?
Causes skin cancer
Causes hearing damage
Easily absorbed by water in the body’s cells
Can cause cancer of the brain
Which wave in the diagram has the highest frequency?
1
2
3
4
Mobile phones use _____________ waves for the signal to link to the mobile network.
Microwaves
Gamma
XRays
Radio
The angle of incidence is _________ the angle of reflection
The diagram shows a ripple tank that a student used to investigate water waves.
The student adjusted the speed of the motor so that the bar hit the water more times each second.
What happened to the frequency and wavelength of the waves produced?
Frequency decreased & Wavelength decreased.
Frequency increased & Wavelength did not change.
Frequency increased & Wavelength decreased.
Frequency increased & Wavelength increased.
Frequency decreased & Wavelength increased.
The diagram shows a ripple tank that a student used to investigate water waves.
The student measured the frequency of the water waves as 5 hertz.
Calculate the period of the water waves.
(answer with the unit symbol).
(a)
A lorry has an air horn. The air horn produces sound waves in the air.
Use one word to complete the following sentence.
Sound waves cause air particles to (a) .
Figure 1 shows a ray of light travelling through a semicircular glass block.
The angle of incidence is labelled i.
The critical angle for the glass is 41°.
Calculate the refractive index of the glass.
using n = sin r / sin i (answer to 2 d.p. No units)
(a)
Figure 2 shows what happens to a ray of light as it meets the boundary between air and water.
The refractive index of the water is 1.3.
Calculate the angle of refraction r. (number only to 2 sig fig)
(a)
If light is traveling from air to water with an angle of INCIDENCE of 40 degrees, what is the angle of refraction? (n=1 air, n=1.33 water)
...How do you solve: (1)(sin40) = (1.33)(sinƟ)
48 degrees
2.07 degrees
11.9 degrees
28.9 degrees
The diagram shows a ray of light going from medium A into medium B. Which one of the following statements cannot be correct?
A is air and B is glass.
A is water and B is vacuum.
A is water and B is air.
A is glass and B is vacuum.
A ray of light is shone on a rectangular glass block as shown. Identify A, B and C.
A = Refracted ray, B = Incident ray, C = Normal
A = Incident ray, B = Refracted ray, C = Normal
A = Normal, B = Refracted ray, C = Incident ray
A = Refracted ray, B = Angle of incidence, C = Angle of refraction
The best definition of refraction is ____.
passing through a boundary
changing direction when crossing a boundary
changing speed at a boundary
bouncing off a boundary
Light travels from air (n = 1.000) into an optical fiber. If the angles of incidence and refraction are 22oand 15º respectively. what is the index of refraction inside the fiber? Round off your values to 3 sig. figs.
1.45
1.44
0.69
0.70
The index of refraction, is defined as the ratio of the speed of light in a vacuum (c = 3x10^8 m/s) to the speed of light in a medium. What is the index of refraction of a medium where the speed of light is 0.7c ? Round off your values to 3 sig. figs.
1.42
1.43
1.28
1.29
Light travels from water (n = 1.333) into an unknown medium. If the angles of incidence and refraction are 45oand 24º respectively. what is the index of refraction of the unknwon medium? Round off your values to 3 sig. figs.
2.32
2.31
0.77
0.76
What happens to light during total internal reflection?
The angle of incidence is greater than the critical angle.
The angle of reflection is the same as the critical angle.
The angle of refraction is less than the critical angle.
The angle of incidence is zero.
_____ cables transmit beams of light without allowing any of the light to escape until it gets to the end of the cable.
Ethernet
Fiber optic
Armored
Coaxial
Chose the TWO conditions are NOT correct for total internal reflection to take place
The incident angle should be less than the critical angle
The incident angle should be greater than the critical angle
Light should travel from a denser to a lighter medium
Light should travel from a lighter to a denser medium
Which diagram correctly describes the critical angle c for air-water surface?
A
B
C
D
Light travels through a glass block as shown. Which angle is the critical angle for light in the glass?
A
B
C
D
see image
A
B
C
D
see image
A
B
C
D
An image is formed in a plane mirror. Which statement must be correct?
The diagram shows two divergent rays of light from an object O being reflected from a plane mirror. At which position is the image formed?
A
B
C
D
The diagram shows a ray of light incident on the surface of a glass block.
The ray of light is partially reflected back into the air and partially refracted into the glass block.
Which row correctly identifies the angle of reflection and the angle of refraction?
A ray of red light enters a semi-circular glass block normal to the curved surface. Which diagram correctly shows the partial reflection and refraction of the ray?
A ray of light meets the face of a glass block at an angle of 30° as shown.
The refractive index of the glass is 1.5.
What is the angle of refraction r inside the glass block?
19°
20°
35°
40°
Show the working, and encircle the answer.
The critical angle in the more dense medium is such that the angle in the less dense medium is
90°
60°
45°
0°
Which of the formulae is used to calculate the critical angle of a medium?
n=sinc1
n=λ2λ1
n=c2c1
n=apparent depthreal depth
Why does the pencil appear bent?
Light rays travelling from parts of the pencil above the water bend away from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.
Light rays travelling from parts of the pencil above the water bend towards from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.
Light rays travelling from parts of the pencil under the water bend away from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.
Light rays travelling from parts of the pencil under the water bend towards from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.
What is the Doppler effect?
The observed change in frequency of sound or light because of the relative motion of a wave source and the observer.
The observed change in amplitude of sound or light because of the relative motion of a wave source and the observer.
The observed change in wave speed of sound or light because of the relative motion of a wave source and the observer.
The observed change in equilibrium position of sound or light because of the relative motion of a wave source and the observer.
You stand on the sidewalk next to the street. A fire truck is moving towards you. The frequency of the siren on the fire truck is 600 Hz.
What should you hear?
Frequency higher than 600 Hz
Frequency lower than 600 Hz
Exactly 600 Hz
No sound, silence.
You stand on the sidewalk next to the street. A fire truck is away from you. The frequency of the siren on the fire truck is 600 Hz.
What should you hear?
Frequency higher than 600 Hz
Frequency lower than 600 Hz
Exactly 600 Hz
No sound, silence.
