Chapter 6 of 10
Concept Maps
Light — Concept Maps
Tamil Nadu Board · Class 9 · Science
3 concept maps of Light for Tamil Nadu Board Class 9 Science, each also written out as a text outline. Maps: Chapter Overview: Light – Key Concepts Mind.
43 questions35 flashcards5 concepts
Interactive on Super Tutor
Studying Light? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for concept maps and more.
Free trial, no card needed.
Super Tutor
One of 13 illustrations for Light in Super Tutor — alongside flashcards, concept maps and practice questions.
3 Concept Maps
Chapter Overview: Light – Key Concepts Mind Map
The map in words
- LIGHT
- Reflection
- Laws of Reflection
- Angle i equals Angle r
- Same plane rule
- Lateral Inversion
- Plane mirror
- AMBULANCE example
- Types of Mirrors
- Concave Mirror
- Converging
- f is negative
- Convex Mirror
- Diverging
- f is positive
- Concave Mirror
- Laws of Reflection
- Image Formation
- Real Image
- Rays actually meet
- Inverted
- On screen
- Virtual Image
- Rays appear to meet
- Erect
- Behind mirror
- Concave Mirror Cases
- Object at infinity
- Object beyond C
- Object at C
- Object between C and F
- Object at F
- Object between F and P
- Convex Mirror
- Always virtual erect diminished
- Real Image
- Mirror Formulas
- Mirror Equation
- 1 over f equals 1 over u plus 1 over v
- Magnification
- m equals minus v over u
- Sign Convention
- u always negative
- f negative for concave
- f positive for convex
- Mirror Equation
- Refraction
- Bending of light
- Cause is change in speed
- Rarer to Denser
- Bends towards normal
- Denser to Rarer
- Bends away from normal
- Snell Law
- mu equals sin i over sin r
- mu equals c over v
- Total Internal Reflection
- Conditions
- Denser to rarer
- Angle greater than critical angle
- Critical Angle
- r equals 90 degrees
- Applications
- Optical Fibres
- Mirage
- Diamond sparkle
- Star twinkling
- Conditions
- Reflection
Light - Complete Concept Overview
The map in words
- LIGHT
- Reflection
- Laws of Reflection
- Angle of incidence = Angle of reflection
- Rays in same plane
- Plane Mirrors
- Virtual erect images
- Lateral inversion
- Spherical Mirrors
- Concave mirrors
- Real and virtual images
- Magnification
- Convex mirrors
- Always virtual images
- Wide field of view
- Concave mirrors
- Laws of Reflection
- Refraction
- Definition
- Light bending at interface
- Change in optical density
- Snell's Law
- sin i / sin r = constant
- Refractive index
- Critical Angle
- Light from denser to rarer
- Total internal reflection
- Applications
- Optical fibers
- Lenses
- Mirages
- Definition
- Mirror Equations
- Mirror Formula
- 1/f = 1/u + 1/v
- Magnification
- m = -v/u
- Sign Convention
- Concave f negative
- Convex f positive
- Mirror Formula
- Real-World Applications
- Vehicle safety
- Medical instruments
- Communication
- Energy collection
- Optical instruments
- Reflection
Light: Comprehensive Concept Map
The map in words
- Light in Physics
- Reflection
- Laws of Reflection
- Angle of Incidence = Angle of Reflection
- Incident ray, normal, reflected ray in same plane
- Plane Mirrors
- Virtual, erect images
- Lateral inversion
- Same size images
- Spherical Mirrors
- Concave Mirrors
- Real and virtual images
- Magnification possible
- Uses: Dentistry, makeup, solar heaters
- Convex Mirrors
- Always virtual images
- Diminished images
- Uses: Rear-view mirrors, traffic safety
- Concave Mirrors
- Laws of Reflection
- Refraction
- Laws of Refraction
- Snells Law
- Refractive Index
- Behavior at Interfaces
- Denser to Rarer: Bends away
- Rarer to Denser: Bends toward
- Normal incidence: No bending
- Phenomena
- Total Internal Reflection
- Mirages
- Diamond sparkle
- Optical fibers
- Apparent Depth
- Objects underwater
- Pencil appearing bent
- Total Internal Reflection
- Laws of Refraction
- Properties of Light
- Speed
- Vacuum: 3 × 10⁸ m/s
- Changes in media
- Nature
- Electromagnetic waves
- Form of energy
- Produces sensation of sight
- Speed
- Reflection
Explore these maps interactively
Explore DiagramsFrequently Asked Questions
What are the important topics in Light for Tamil Nadu Board Class 9 Science?
Key topics in Light include Reflection of Light and Laws of Reflection, Real and Virtual Images, Spherical Mirrors – Key Terms and Concepts, Rules for Ray Diagrams and Image Formation in Concave Mirror. Study these first, then practise questions on each for Class 9 exams.
What do the concept maps for Light show?
The 3 maps show how the ideas in Light connect: Chapter Overview: Light – Key Concepts Mind Map; Light - Complete Concept Overview. Each map is also written out as an outline on this page.
How should I revise Light for Class 9 exams?
Learn the core ideas first, then work through the 43 practice questions on Light. Revise 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 Light
For serious students
Get the full Light chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Tamil Nadu Board Class 9 Science. Free to start, no card needed.