Skip to main content
Super TutorResources
Chapter 6 of 12
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Chapter Summary

Spectrum

ICSE · Class 10 · Physics

Summary of Spectrum for ICSE Class 10 Physics. Key concepts, important points, and chapter overview.

43 questions33 flashcards5 concepts

Interactive on Super Tutor

Studying Spectrum? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.

Try Super Tutor — Free

1,000+ Class 10 students started this chapter today

A comprehensive infographic displaying the entire electromagnetic spectrum, ordered by increasing wavelength and decreasing frequency (or vice-versa). It should include different regions like Gamma ra
Super Tutor

Super Tutor has 5+ illustrations like this for Spectrum alone — flashcards, concept maps, and step-by-step visuals.

See them all

Overview

Spectrum is the band of colours formed when white light passes through a prism and splits into its seven constituent colours. White light is polychromatic light and, according to Newton's concept, it contains seven colours in the order VIBGYOR. A prism produces deviation at both refracting surfaces,

Key Concepts

A ray of light passing through

A ray of light passing through a prism is deviated twice, once at each refracting surface. The total deviation is the sum of these two deviations: δ=δ

The phenomenon of splitting of white

The phenomenon of splitting of white light by a prism into seven colours is called dispersion of light. White light consists of violet, indigo, blue,

The beautiful pattern of seven colours

The beautiful pattern of seven colours obtained after passing white light through a prism is called spectrum. A spectrum is pure when the colour bands

The refractive index of glass increases

The refractive index of glass increases as wavelength decreases, so shorter wavelengths deviate more. Violet light, with wavelength about 4000 Å, suff

Different colours travel with different speeds

Different colours travel with different speeds in a medium because refractive index depends on wavelength. This difference in speed is the main cause

Learning Objectives

  • Understand deviation of light through a prism
  • Explain dispersion of white light into seven colours
  • Distinguish between spectrum, pure spectrum, and impure spectrum
  • Identify the order of colours in white light as VIBGYOR
  • Explain the electromagnetic spectrum and its main regions

Frequently Asked Questions

What are the important topics in Spectrum for ICSE Class 10 Physics?
Key topics in Spectrum include Correct vs Incorrect Understanding of Dispersion Through a Prism, Spectrum Chapter — Complete Concept Map, Spectrum Chapter — Complete Concept Map. These are the concepts ICSE Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Spectrum — ICSE Class 10 Physics?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Spectrum

All 12 chapters — ICSE Class 10 Physics Chapter Summary

For serious students

Get the full Spectrum chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 10 Physics.

Try Super Tutor Free
Try the full chapter — Free