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6. Spectrum

The chapter discusses the phenomenon of dispersion and the creation of the spectrum from white light through a prism. It explains the separation of colors based on their wavelengths and how different colors bend at varying angles, leading to a distinct order of colors known as VIBGYOR. Additionally, it describes the recombination of the colors back to white light and highlights Sir Isaac Newton's experiment that demonstrated these principles.

Sections

Spectrum

This section covers the dispersion of light, the visible spectrum, and the process of recombination, highlighting Sir Isaac Newton's experiments.

6 Section Overview

Start current section content and materials

6.1 Dispersion of Light

Dispersion is the phenomenon of splitting white light into its seven constituent colors (VIBGYOR) when it passes through a prism.

6.2 Spectrum

The spectrum consists of the seven colors that emerge from the dispersion of white light.

6.3 Cause of Dispersion

The cause of dispersion is the variation in the speed of light of different colors in a medium, resulting in a unique refractive index for each color.

6.4 Recombination of Spectrum

The recombination of the spectrum shows that white light is a combination of the seven colors produced by dispersion through a prism.

6.5 Newton’s Experiment

Newton’s Experiment illustrates how white light can be separated into multiple colors using a prism and subsequently recombined.

Learning Objectives

  • Master the fundamentals of 6. Spectrum

  • Apply learned concepts in practical scenarios

  • Successfully complete all chapter exercises

Key Concepts

Dispersion

The phenomenon of splitting white light into its seven constituent colors when it passes through a prism.

Spectrum

The band of seven colors produced due to the dispersion of white light, appearing in the order of VIBGYOR.

Recombination

The process of combining the dispersed colors back to form white light, typically using a second prism.

Newton's Experiment

An experiment by Sir Isaac Newton to demonstrate the composition of white light by passing it through a prism.

Practice Exercises

Total Questions

4

Estimated Time

8 min

Passing Score

70%

Instructions

  • Read each question carefully
  • You can use hints if you need help
  • Complete all questions before submitting