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Chapter 18: Problem 20

List the colors of the visible light spectrum in order of increasing frequency.

Short Answer

Expert verified
Violet, Indigo, Blue, Green, Yellow, Orange, Red.

Step by step solution

01

- Understand the visible light spectrum

The visible light spectrum is a range of wavelengths of light that can be seen by the human eye. It is part of the larger electromagnetic spectrum.
02

- Identify the colors in the visible spectrum

The colors of the visible light spectrum, from lowest frequency (longest wavelength) to highest frequency (shortest wavelength), are Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
03

- Reverse the order to list by increasing frequency

To list the colors in order of increasing frequency, we start from the color with the shortest wavelength (highest frequency) and end with the color with the longest wavelength (lowest frequency). Therefore, the order is: Violet, Indigo, Blue, Green, Yellow, Orange, and Red.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Color frequency order
The visible light spectrum consists of a range of colors that we perceive with our eyes. These colors appear in a specific order, which corresponds to their frequencies.

Frequency refers to the number of wavelengths that pass a point in one second. Higher frequency means a higher number of wavelengths in a given time.

The order of colors in the visible spectrum based on increasing frequency is:
  • Violet
  • Indigo
  • Blue
  • Green
  • Yellow
  • Orange
  • Red
This means violet has the highest frequency and red has the lowest. Understanding this sequence helps us better comprehend how we see different colors.
Electromagnetic spectrum
The visible light spectrum is just a small part of the electromagnetic spectrum. The electromagnetic spectrum includes all types of electromagnetic radiation, ranging from gamma rays to radio waves.

Each type of radiation in the spectrum is distinguished by its wavelength and frequency. They have important uses in various fields, such as medicine, communications, and astronomy.

Here are some key types of electromagnetic radiation in order of increasing wavelength and decreasing frequency:
  • Gamma rays
  • X-rays
  • Ultraviolet (UV) light
  • Visible light
  • Infrared (IR) light
  • Microwaves
  • Radio waves
Visible light lies between ultraviolet light and infrared light in the spectrum. It is essential for human vision and plays a crucial role in our daily lives.
Wavelengths of light
Wavelength is the distance between two consecutive peaks of a wave. In the context of light, different colors have different wavelengths.

The visible light spectrum contains wavelengths that range approximately from 400 nanometers (nm) to 700 nanometers. Each color corresponds to a specific range of wavelengths:
  • Violet: 380 nm to 450 nm
  • Indigo: 450 nm to 475 nm
  • Blue: 475 nm to 495 nm
  • Green: 495 nm to 570 nm
  • Yellow: 570 nm to 590 nm
  • Orange: 590 nm to 620 nm
  • Red: 620 nm to 750 nm
Colors with shorter wavelengths, like violet and indigo, have higher frequencies, while those with longer wavelengths, like orange and red, have lower frequencies.

By understanding these wavelengths, you can appreciate why different colors of light behave the way they do, such as how they refract and how they are used in various technologies.

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Most popular questions from this chapter

Explain the difference between the terms in each of the following pairs. X ray, gamma ray

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