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Refraction of light

Maharashtra Board · Class 10 · Science

Quick revision notes for Refraction of light — Maharashtra Board Class 10 Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions32 flashcards5 concepts

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Key Topics to Revise

1

1. Refraction of Light and Glass Slab Activity

  • Refraction is the change in direction of light while going from one transparent medium to another transparent medium.
  • When light goes from a rarer medium to a denser medium, it bends towards the normal.
  • When light goes from a denser medium to a rarer medium, it bends away from the normal.
2

2. Laws of Refraction and Refractive Index

  • The first law of refraction says the incident ray, refracted ray, and the normal at the point of incidence lie in the same plane.
  • The second law says that for a given pair of media, the ratio sin i to sin r is constant.
  • This constant is called refractive index, n.
3

3. Common Media and Velocity Relations

  • Air has refractive index 1.0003.
  • Water has refractive index 1.33.
  • Ice has refractive index 1.31.
4

4. Atmospheric Refraction: Mirage, Twinkling of Stars, and Sunrise/Sunset

  • Air near a hot road or desert surface is hot and rarer, so light bends through layers of changing refractive index.
  • A mirage is the illusion of water on a hot road or in a desert.
  • Refractive index of air increases with increasing height.

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Full Notes

Key Concepts

Refraction is the change in directionIn a rectangular glass slabThe first law says the incidentRefractive index is a propertyThe refractive index of medium 2

Frequently Asked Questions

What are the important topics in Refraction of light for Maharashtra Board Class 10 Science?
Refraction of light covers several key topics that are frequently asked in Maharashtra Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Refraction of light — Maharashtra Board Class 10 Science?
Understand the core concepts first, then work through the 45 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.

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