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CBSE Class 10 Science: Complete Formula Sheet — Physics, Chemistry, Biology 2026
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Tushar Parik
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2 min read
CBSE Class 10 Science: Complete Formula Sheet — Physics, Chemistry, Biology 2026
This comprehensive guide from Bright Tutorials covers everything you need to know — with clear explanations, exam tips, and key points for board exam preparation.
In This Article
Physics — Electricity
- V = IR, R = V/I, I = V/R
- R = ρl/A
- Series: R = R₁+R₂+R₃, Parallel: 1/R = 1/R₁+1/R₂+1/R₃
- P = VI = I²R = V²/R
- E = Pt (in kWh: E = P(kW) × t(h))
- H = I²Rt (Joule's heating)
Physics — Light
- Mirror: 1/v + 1/u = 1/f
- Lens: 1/v - 1/u = 1/f
- m = -v/u (mirror), m = v/u (lens)
- P = 1/f(m) in Dioptres
- n = sin i/sin r (Snell's law)
- Lens maker: P = P₁ + P₂ (combination)
Chemistry — Key Reactions
- Neutralisation: Acid + Base → Salt + Water
- Metal + Acid → Salt + H₂
- Carbonate + Acid → Salt + H₂O + CO₂
- Thermal decomposition: 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂
Biology — Key Concepts
- Photosynthesis: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
- Respiration: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy
- Mendel's ratios: Monohybrid 3:1, Dihybrid 9:3:3:1
- Heart: 4 chambers, double circulation
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