The CBSE Class 10 Science Board Exam 2026 is scheduled for February 25. The last-minute preparation becomes much stronger when you revise the most important Physics chapters properly - Light, Electricity, and Magnetism. These chapters carry high weightage, include numericals, diagrams, and conceptual questions, and often appear in case-based formats.
If your exam is near, this is not the time to start new topics. It is time for focused final revision. With the right strategy and the help of these revision videos, you can quickly strengthen concepts and improve confidence.
Why Light, Electricity & Magnetism Are So Important
Get exam-ready with our CBSE Class 10 Science 2026 Final Revision videos on Light, Electricity & Magnetism. These quick revision sessions cover key formulas, important diagrams, and frequently asked questions - perfect for last-minute preparation and boosting confidence before your board exam. Don’t miss this smart revision boost! These three units are scoring because:
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They include direct formula-based questions
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Numericals are predictable
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Diagrams carry easy marks
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Case-based questions are common
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Concepts are repeated every year
If revised properly, they can boost your overall Science score significantly.
Final Revision of Light – Reflection & Refraction
This video will help students revise full chapter in one go:
Light is often considered confusing because of:
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Ray diagrams
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Sign conventions
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Mirror and lens formulas
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Magnification
What to Focus on in Final Revision
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Mirror formula
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Lens formula
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Magnification formula
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Ray diagram rules
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Sign convention
Do not just memorise formulas. Understand:
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Convex mirror always forms virtual image
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Concave mirror can form real or virtual image
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Convex lens usually forms real image (except when object is within focal length)
The Light – Reflection & Refraction in One Shot video helps revise diagrams step-by-step quickly.
Human Eye & the Colourful World – Quick Revision
This chapter is theory-based but very scoring. This video lecture help students revise:
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Structure of human eye
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Defects of vision (myopia, hypermetropia, presbyopia)
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Correction using lenses
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Dispersion of light
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Scattering (Why sky is blue?)
Remember:
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Myopia → Concave lens
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Hypermetropia → Convex lens
The Human Eye & the Colourful World in One Shot video helps clear confusion quickly.
Electricity – Final Formula Revision
Electricity includes numericals, so formula clarity is important.
Revise:
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Ohm’s Law
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V = IR
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Resistance combination (series & parallel)
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Electric power formula
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Heating effect of current
Understand relationships:
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Series → Same current
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Parallel → Same voltage
Practise 4–5 numericals before exam day to increase speed.
The Complete Class 10 Physics in One Video is useful for quick recap of all electricity concepts together.
Magnetic Effects of Electric Current
This chapter includes:
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Magnetic field lines
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Right-hand thumb rule
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Fleming’s Left-Hand Rule
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Electric motor
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Electromagnetic induction
Quick revision tips:
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Motor rule → Left hand
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Generator rule → Right hand
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Magnetic field forms circles around wire
Understand diagrams clearly because board questions often ask diagram-based explanations.
Smart 1-Day Final Revision Plan
Follow this:
Step 1 (2–3 Hours)
Watch Light – Reflection & Refraction One Shot
Step 2 (1–2 Hours)
Watch Human Eye One Shot
Step 3 (3–4 Hours)
Watch Complete Class 10 Physics in One Video
Write down:
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All important formulas
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Key diagrams
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Common mistakes
Most Common Mistakes to Avoid
Students usually:
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Forget sign convention
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Mix series and parallel formulas
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Draw incorrect ray diagrams
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Forget units
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Skip labelling diagrams
Avoid these small errors to secure full marks.
How This Final Revision Boosts Your Score
When formulas and diagrams are fresh in your mind:
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You solve numericals faster
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You reduce silly mistakes
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You feel confident
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You manage time better
Confidence plays a huge role in board exams.