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⚛️ Class 9 · Kerala SCERT

Physics ഭൗതികശാസ്ത്രം

8 chapters · 135 lessons · 320+ animations. Every chapter starts from the basics, explains each idea with animations, solves every textbook question and ends with a model test.

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Part 1
n
Chapter 1
Refraction of Light
പ്രകാശത്തിന്റെ അപവർത്തനം
Not started
Why a straw looks broken: optical density, refractive index n = c/v, total internal reflection, fibres and mirages.
18 lessons
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v
Chapter 2
Equations of Motion
ചലനസമവാക്യങ്ങൾ
Not started
Distance and displacement, velocity, acceleration, motion graphs and v = u + at, s = ut + ½at², v² = u² + 2as.
18 lessons
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F
Chapter 3
Laws of Motion
ചലനനിയമങ്ങൾ
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Balanced and unbalanced forces, inertia, momentum, F = ma, impulse and action–reaction.
18 lessons
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g
Chapter 4
Gravitation
ഗുരുത്വാകർഷണം
Not started
Why things fall: F = Gm₁m₂/d², g = 9.8 m/s², mass and weight, free fall, satellites and Chandrayaan-3.
17 lessons
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Part 2
ρ
Chapter 5
Buoyant Force
പ്ലവക്ഷമബലം
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Why ships float and nails sink: buoyant force, Archimedes’ principle, floatation, relative density, hydrometer and lactometer.
15 lessons
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E
Chapter 6
Work and Energy
പ്രവൃത്തിയും ഊർജവും
Not started
W = Fs, mgh and ½mv², positive and negative work, conservation of energy, hydroelectric power and P = W/t.
17 lessons
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Ω
Chapter 7
Current Electricity
ധാരാവൈദ്യുതി
Not started
Potential difference, emf and cells, current I = Q/t, Ohm’s law V = IR, resistance, rheostat, series and parallel circuits.
17 lessons
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♪
Chapter 8
Sound
ശബ്ദം
Not started
Sound from vibrations, why it needs a medium, its speed in solids, liquids and gases, the ear, music, noise and noise pollution.
15 lessons
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🧪 Exam corner

Revise a whole chapter on one page, then try its printable 40-mark model paper. The solved paper follows each test.

📝 Annual examination papers · all chapters · 60 marks · 2 hours

Full model papers for the annual exam: print the question paper and the separate step-by-step answer key, or practise online with a timer and get a score.

All sets ▶Set 1 paperSet 1 onlineSet 2 paperSet 2 onlineSet 3 paperSet 3 online
Ch 1 · Refraction of Light📝 Revision🧪 Model test
Ch 2 · Equations of Motion📝 Revision🧪 Model test
Ch 3 · Laws of Motion📝 Revision🧪 Model test
Ch 4 · Gravitation📝 Revision🧪 Model test
Ch 5 · Buoyant Force📝 Revision🧪 Model test
Ch 6 · Work and Energy📝 Revision🧪 Model test
Ch 7 · Current Electricity📝 Revision🧪 Model test
Ch 8 · Sound📝 Revision🧪 Model test

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Interactive, animated self-study guides that follow the Kerala SCERT textbook. Every page works offline in any modern browser.