EM waves
Quiz
•
Physics
•
12th Grade
•
Practice Problem
•
Hard
Kambar Kadyrov
Used 21+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one of the following statements concerning electromagnetic waves is false?
Electromagnetic waves are longitudinal waves.
Electromagnetic waves transfer energy through space.
The existence of electromagnetic waves was predicted by Maxwell.
Electromagnetic waves can propagate through a material substance.
Electromagnetic waves do not require a physical medium for propagation.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Note the different types of electromagnetic radiation: (1) X-rays (4) visible light
(2) radio waves (5) infrared radiation
(3) gamma rays (6) ultraviolet radiation
Which list correctly ranks the electromagnetic waves in order of increasing frequency?
2, 3, 4, 5, 6, 1
2, 5, 4, 1, 6, 3
2, 5, 4, 6, 1, 3
3, 1, 6, 4, 5, 2
3, 6, 1, 4, 5, 2
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one of the following will not generate electromagnetic waves or pulses?
a steady direct current
an accelerating electron
a proton in simple harmonic motion
an alternating current
charged particles traveling in a circular path in a mass spectrometer
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Complete the following sentence: When electrons from a heated filament accelerate through vacuum toward a positive plate,
only an electric field will be produced.
only a magnetic field will be produced.
electromagnetic waves will be produced.
longitudinal waves will be produced.
neither electric nor magnetic fields will be produced.
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one of the following wavelengths is in the infrared range of the electromagnetic spectrum?
100 mm
100 nm
400 m
2 ´ 10–15 m
20 µm
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one of the following statements concerning electromagnetic waves is false?
Electromagnetic waves carry energy.
X-rays have longer wavelengths than radio waves.
In vacuum, all electromagnetic waves travel at the same speed.
Lower frequency electromagnetic waves can be produced by oscillating circuits.
They consist of mutually perpendicular electric and magnetic fields that oscillate perpendicular to the direction of propagation.
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one of the following statements concerning the wavelength of an electromagnetic wave in a vacuum is true?
The wavelength is independent of the speed of the wave for a fixed frequency.
The wavelength is inversely proportional to the speed of the wave.
The wavelength is the same for all types of electromagnetic waves.
The wavelength is directly proportional to the frequency of the wave.
The wavelength is inversely proportional to the frequency of the wave.
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