Which of the following is the approximate range of frequencies of infrared radiation?
1 × 1014 – 1 × 1016 Hz
1 × 1012 – 1 × 1014 Hz
1 × 109 – 1 × 1011 Hz
1 × 103 – 1 × 109 Hz
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Syllabus Edition
First teaching 2023
First exams 2025
Which of the following is the approximate range of frequencies of infrared radiation?
1 × 1014 – 1 × 1016 Hz
1 × 1012 – 1 × 1014 Hz
1 × 109 – 1 × 1011 Hz
1 × 103 – 1 × 109 Hz
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Which of the following statements is a correct description of part of the electromagnetic spectrum?
waves of wavelength 5 × 10–7 m are infrared waves
waves of wavelength 5 × 10–9 m are high energy gamma rays
waves of wavelength 9 × 10–7 m are light waves
waves of wavelength 3 × 10–8 m are ultraviolet waves
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Which of the following give the order of magnitude of frequencies of the visible part of the electromagnetic spectrum?
1015 Hz
1014 Hz
1013 Hz
1016 Hz
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The diagram shows part of the electromagnetic spectrum.
Which row correctly labels the regions marked P and Q?
|
P |
Q |
A B C D |
infrared ultraviolet x-ray infrared |
x-ray x-ray infrared microwaves |
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Which of the following do not travel at the speed of light in a vacuum?
x-rays
radio waves
microwaves
electrons
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Which of the following is the number of wavelengths in one metre of visible light?
104
106
108
1010
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Two lasers are set up to pass through a vacuum. One laser emits red light; the other emits green light.
Which property of the two lasers are different?
speed
plane of polarisation
frequency
amplitude
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The wavelength of light emitted by a laser is 600 nm.
Which of the following is the distance in number of wavelengths, that is travelled by light in one second?
5.0 × 1014 s–1
5.0 × 108 s–1
5.0 × 1011 s–1
5.0 × 1017 s–1
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Waves of the electromagnetic spectrum travel through a vacuum at speed c and with a wavelength λ and frequency f
Which of the following describes the speed and wavelength when the frequency is ?
|
λ |
c |
A |
||
B |
||
C |
||
D |
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The diameter of a nucleus and the wavelength of an electromagnetic wave are in the same order of magnitude.
In which region of the electromagnetic spectrum would that wavelength occur?
infrared
visible light
x-ray
gamma-ray
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R is a source emitting infra-red radiation and S is a source emitting ultra-violet radiation. The table suggests the wavelengths for R and S.
Which row is correct?
|
Wavelength emitted by R / m |
Wavelength emitted by S / m |
A B C D |
5 × 10–7 5 × 10–8 5 × 10–5 5 × 10–5 |
5 × 10–8 5 × 10–10 5 × 10–8 5 × 10–10 |
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Which statement would be deduced from a table of wavelengths of the waves in the electromagnetic spectrum?
the wavelength range for radio waves is less than that for infrared waves
the wavelength range for x-rays is less than that for radio waves
red light has a shorter wavelength than green light
green light has a shorter wavelength than x-rays
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A telescope detects electromagnetic radiation with wavelengths 2 cm.
Which type of telescope is it ?
x-ray telescope
optical telescope
microwave telescope
radio telescope
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An infrared wave has a wavelength of 30 µm and frequency finfrared. An x-ray has a wavelength of 400 pm and frequency fx-ray.
What is the value of the ratio ?
1.3 × 10−5
0.075
13
7.5 × 104
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Fig. 1.1 shows the percentage of transmitted wavelengths which can travel through Earth’s atmosphere and reach sea level.
Fig. 1.1
What is the range of frequencies that can penetrate Earth’s atmosphere and reach sea level?
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Monochromatic light is incident normally upon a double slit where the distance between the slits is 0.02 mm. The angle between the second-order and central maxima is 3.96°.
What is the colour of the monochromatic light?
Violet
Blue
Green
Red
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The table below contains the frequencies of various parts of the electromagnetic spectrum.
Which row correctly describes X as infrared and Y as X-rays?
X |
Y |
|
A. |
3 × 105 Hz |
3 × 1020 Hz |
B. |
3 × 1010 Hz |
3 × 1016 Hz |
C. |
3 × 1018 Hz | 3 × 1014 Hz |
D. |
3 × 1014 Hz |
3 × 1019 Hz |
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