Podcast
Questions and Answers
What is the arrangement of EM waves from left to right in terms of frequency?
What is the arrangement of EM waves from left to right in terms of frequency?
- Longest to shortest frequency
- Lowest to highest frequency (correct)
- Highest to lowest frequency
- Equal frequency across all waves
Which type of EM wave has the highest energy?
Which type of EM wave has the highest energy?
- Gamma rays (correct)
- Visible light
- Radio waves
- Infrared waves
What is the general speed of EM waves in a vacuum?
What is the general speed of EM waves in a vacuum?
- 3 x 10^10 m/s
- 3 x 10^8 m/s (correct)
- 3 x 10^6 m/s
- 3 x 10^5 m/s
If a light wave collides with an irregular surface, what happens to the reflected ray?
If a light wave collides with an irregular surface, what happens to the reflected ray?
What happens to the magnetic force of a magnet when it is broken into two pieces?
What happens to the magnetic force of a magnet when it is broken into two pieces?
Which proponent stated that a moving charge can produce magnetism?
Which proponent stated that a moving charge can produce magnetism?
How many images will be formed if two mirrors are facing each other?
How many images will be formed if two mirrors are facing each other?
What occurs when the angle of incidence is 25°?
What occurs when the angle of incidence is 25°?
Flashcards
EM wave arrangement (wavelength)
EM wave arrangement (wavelength)
Electromagnetic waves are arranged from longest to shortest wavelength from left to right.
EM wave arrangement (frequency)
EM wave arrangement (frequency)
Electromagnetic waves are arranged from lowest to highest frequency from left to right.
EM wave energy (highest)
EM wave energy (highest)
Gamma rays have the highest energy in the electromagnetic spectrum.
EM wave energy (lowest)
EM wave energy (lowest)
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Speed of EM waves in a Vacuum
Speed of EM waves in a Vacuum
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Reflection Angle
Reflection Angle
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Mirror Images (multiple mirrors)
Mirror Images (multiple mirrors)
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Electromagnetic Wave Characteristics
Electromagnetic Wave Characteristics
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Study Notes
Electromagnetic Spectrum
- The electromagnetic spectrum arranges electromagnetic waves from longest wavelength to shortest wavelength, and lowest frequency to highest frequency.
- Radio waves have the longest wavelength and lowest frequency.
- Gamma rays have the shortest wavelength and highest frequency.
- Electromagnetic waves are transverse waves that travel perpendicular to their direction of propagation.
- The speed of electromagnetic waves in a vacuum is 3 x 10⁸ m/s.
Wave Equation
- The formula for the speed of a wave (c) is speed=wavelength (λ) multiplied by frequency (f).
- c = λf
- Given a wavelength of 1.45 x 10⁻⁴ meters and the speed of light (c= 3 x 10⁸ m/s), the frequency of the wave is 2.07 x 10¹² Hz.
Electromagnetic Wave Applications
- Different electromagnetic waves have various applications, including radio waves for AM radio, microwaves for food irradiation, infrared waves for thermal imaging, visible light for photo therapy, ultraviolet rays for vitamin D production, X-rays for detecting bone, and gamma rays for radiography.
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