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Electromagnetic Spectrum and Waves Quiz

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Questions and Answers

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?

Gamma rays (correct)

Visible light

Radio waves

Infrared waves

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?

It reflects at a different angle for each incident ray Signup and view all the answers

What happens to the magnetic force of a magnet when it is broken into two pieces?

Each piece becomes a separate magnet Signup and view all the answers

Which proponent stated that a moving charge can produce magnetism?

André-Marie Ampère Signup and view all the answers

How many images will be formed if two mirrors are facing each other?

Infinite images Signup and view all the answers

What occurs when the angle of incidence is 25°?

The angle of reflection is 25° Signup and view all the answers

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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Description

Test your knowledge on the electromagnetic spectrum, wave equations, and various applications of electromagnetic waves. This quiz covers fundamental concepts with emphasis on wavelengths, frequencies, and real-life uses of these waves.