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Move beyond rote coaching memorization. Vigyansh guides Indian students through Physics, Chemistry, Biology, and Maths with 112+ live interactive simulations, step-by-step guided hints, and page-exact textbook citations.
1/v - 1/u = 1/fOpen Full Lab →Touch the Science. Don't Just Memorize.
Google AI Overviews can summarize definitions, but they can't give you the intuition of turning a knob. Explore our public curriculum labs built for CBSE board practicals.
Convex Lens Ray Diagram Lab
Drag the object across 2F and F. Observe real vs virtual image formation, ray tracing rules, and live magnification.
Ohm's Law & Circuit Lab
Vary voltage and resistance to observe live animated current flow and verify the constant slope on the V–I graph.
Projectile Motion Trajectory
Adjust launch velocity and angle to calculate horizontal range, maximum height, and flight duration in real-time.
Chemical Equation Balancer
Level the atom scales step-by-step using stoichiometric coefficients. Master the NCERT hit-and-trial method for board exams.
Plus 108 more verified simulations built into the Vigyansh AI Tutor across Classes 5 to 12
An AI That Teaches, Never Just Spoon-Feeds
Most students in large tuition classes are afraid to ask "silly doubts". Vigyansh provides a patient, non-judgmental senior tutor that guides your thinking with step-by-step hints in Hinglish or English.
You ask a doubt: "Sir, why does acceleration decrease if mass increases?"
- Dumps high-level jargon above your grade ceiling
- Doesn't check if you understood the core intuition
- Rote memorization causes blanks during CBSE exams
You ask the same doubt in your natural words or Hinglish.
- Guides you to derive the formula ($a = F/m$) yourself
- Strict grade-ceiling: keeps language exactly at your class level
- Rewards shown steps and builds lasting conceptual retention
100% Textbook-Grounded. Zero Hallucinations.
Every answer links directly to the actual page of your NCERT textbook with bounding-box image crops. No random internet claims.
Don't Just Take Our Word for It.
See the Exact Page & Line.
Unlike general LLMs that summarize generic web blogs, Vigyansh has ingested official NCERT textbooks page-by-page using computer vision. When you ask a question, our backend serves a live rendered crop of the textbook page with the exact bounding box highlighted.
9.3.3 Sign Convention for Spherical Lenses
For lenses, we follow sign conventions, similar to the one used for spherical mirrors. We apply the rules for signs of distances, except that all measurements are taken from the optical centre of the lens.
"According to the convention, the focal length of a convex lens is positive and that of a concave lens is negative. You must take care to apply appropriate signs for the values of u, v, f, object height h and image height h'."
The lens formula expressed above is general and is valid in all situations for any spherical lens...
Physics, Chemistry, Biology & Maths. Complete Foundation.
Strengthening fundamentals in Class 5–10 so competitive exams (NTSE, Olympiads, JEE & NEET) in Class 11–12 feel achievable.
Physics
Motion, Force & Laws, Gravitation, Work & Energy, Sound, Light Optics, Electricity, Magnetic Effects.
- Interactive Ray Optics labs
- Circuit Builders with ammeters
- Free-body vector diagrams
Chemistry
Chemical Reactions, Acids Bases & Salts, Metals & Non-metals, Carbon Compounds, Periodic Classification.
- Equation stoichiometric balancing
- Bohr atomic electron shells
- Displacement reactivity series
Biology
Life Processes (Circulation, Excretion, Respiration), Control & Coordination, Heredity & Evolution, Our Environment.
- 4-Chambered heart blood flow
- Nephron ultrafiltration model
- Punnett square genetics ratios
Mathematics
Real Numbers, Polynomials, Linear Equations, Quadratic Equations, Arithmetic Progressions, Coordinate Geometry, Trigonometry.
- Interactive function graphing
- Trigonometric right-triangle solver
- Circle theorem dynamic proofs
Photo & OCR Input
Stuck on a problem in your school worksheet or coaching module? Photograph your handwritten calculation.
- Reads handwritten equations
- Finds your exact calculation slip
- TeX/LaTeX formatted output
JEE & NEET Readiness
A deep conceptual bridge from Class 10 to Higher Secondary sciences, clearing foundational doubts early.
- Kinematics in 2D vectors
- Organic structure nomenclature
- Calculus and slope intuition
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