How to Study Light Chapter – Class 10 CBSE | Best Strategy to Score 90+ in Science
Are you struggling to understand the Light chapter in Class 10 Science? Don’t worry! This complete guide will help you learn the chapter smartly, quickly, and effectively. Whether you're aiming for concept clarity or high marks in CBSE exams, this method will work for every student.
📚 Step 1: Master the Theory – NCERT is Your Bible!
- Read the chapter from the NCERT Science textbook line by line.
- Focus on: Reflection of light, types of mirrors, rules of image formation, mirror formula, sign convention.
- Memorize important definitions like: Principal axis, focus, center of curvature, pole.
- Use flashcards or sticky notes for revision.
🔍 Step 2: Practice All Ray Diagrams (Must for Exams)
- Draw all image formation diagrams for concave and convex mirrors.
- Use rules like: Ray parallel to axis passes through focus, ray through center reflects back.
- Practice without seeing textbook, using a pencil and ruler.
🧮 Step 3: Understand and Practice Numerical Problems
- Use the Mirror Formula: 1/f = 1/v + 1/u
- Understand sign conventions clearly.
- Practice numericals on: focal length, image distance, object distance, nature and size of image.
- Practice at least 20 questions from NCERT and sample papers.
💯 Bonus Tips to Score Full Marks
- Solve previous year CBSE question papers.
- Take timed mock tests to simulate real exam.
- Revise all formulas daily.
- Use diagrams and write answers in points for clarity.
- Join Agastya Classes for expert guidance and live doubt-solving.
📥 Free PDF Download – Light Chapter Notes & Diagrams
📥 Download Light Chapter Notes (PDF)
📌 FAQs – Light Chapter for Class 10 CBSE
Q1. What is the best way to remember ray diagrams?
→ Practice daily and redraw diagrams from memory.
Q2. Are NCERT questions enough?
→ Yes, but for top scores, also solve exemplar and sample papers.
Q3. How to avoid mistakes in sign conventions?
→ Draw axis and assign signs before solving numericals.
📞 Need Help? Join Agastya Classes – Pune
We offer personal coaching, concept clarity, and test series for CBSE students.
📍 Location: New Sangavi, Pune (Near Spicer School)
📱 Contact: 9226801315
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Light :
Light is one of the beautiful but lengthiest chapter of physics in 10th CBSE syllabus. Students often get confused how to study this chapter. In this blog I'm going to give you some ideas to study this chapter more effectively.
Lets brighten our future with light...
The light chapter can be divided into following parts
1. Theory
2. Ray diagrams
3. Formulae based questions.
If you could separate things in these categories then you can start studying each part one by one
# Laws- laws of reflection,
-laws of refraction.
# Definitions-
- center of curvature
- pole
- principle axis
- principle focus
- focal length
- aperture
- refraction
- refractive index ( relative)
- absolute refractive index
- power of lens.
- one diopter.
-for lenses.
# Characteristics of image formed by plane mirror.
# Uses of both types of lenses and mirrors.
# Difference between real image and virtual image
Ray diagrams :
To draw ray diagram correctly one should remember table of image formation by both mirrors and both lenses. IMP diagrams are as follows
- Ray diagrams of concave and convex mirrors (8)
- Ray diagram of refraction of light by glass slab.(8)
- Ray diagrams of concave and convex lenses.(1)
- formulae for mirror ( mirror's formula, magnification)
- formula for lens ( lenses formula, magnification)
- power of the lens.
- refractive index.
