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Questions and Answers
All electromagnetic waves are longitudinal waves.
All electromagnetic waves are longitudinal waves.
False (B)
Electromagnetic waves can travel without a medium at the same speed of $3 \times 10^8$ m/s in a vacuum.
Electromagnetic waves can travel without a medium at the same speed of $3 \times 10^8$ m/s in a vacuum.
True (A)
The frequency of an electromagnetic wave changes when it travels from a vacuum to another medium.
The frequency of an electromagnetic wave changes when it travels from a vacuum to another medium.
False (B)
Ionizing waves have lower frequencies and can disrupt cellular functions.
Ionizing waves have lower frequencies and can disrupt cellular functions.
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Higher temperature bodies emit a range of electromagnetic waves with lower frequencies.
Higher temperature bodies emit a range of electromagnetic waves with lower frequencies.
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Flashcards
Electromagnetic Waves
Electromagnetic Waves
Electromagnetic waves that are made up of oscillating electric and magnetic fields and travel at the speed of light in a vacuum.
Transverse Nature of EM Waves
Transverse Nature of EM Waves
Electromagnetic waves are transverse waves, meaning the oscillations of the electric and magnetic fields are perpendicular to the direction of wave propagation.
Speed of Light
Speed of Light
Electromagnetic waves travel at a constant speed of 3 x 10^8 m/s in a vacuum, regardless of their frequency or wavelength.
Reflection and Refraction of EM Waves
Reflection and Refraction of EM Waves
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Energy Transfer by EM Waves
Energy Transfer by EM Waves
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