Practice Electromagnetic Waves (10) - Electromagnetic Waves

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10 questions

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6 sample questions

Question 1.
What is the speed of electromagnetic waves in a vacuum?
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Think of the speed of light.
Question 2.
Name one type of electromagnetic wave used in communication.
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Consider what waves are used for broadcasting.
3Question 3.
What is the primary characteristic of electromagnetic waves?
- They require a medium to propagate
- They consist of oscillating electric and magnetic fields
- They travel faster in water
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Recall the definition of electromagnetic waves.
4Question 4.
True or False: The speed of electromagnetic waves is the same in all mediums.
- True
- False
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Consider how light behaves in different materials.
Question 5.
If an electromagnetic wave travels through a medium with a refractive index of 2, what is its speed in that medium?
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Use the formula for refractive index.
Question 6.
An electromagnetic wave has a frequency of 3×10^14 Hz. What is its wavelength?
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Rearrange the wave relationship to find wavelength.

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