A complete Class 10 Physics guide to lenses and mirrors — types, ray diagrams, sign convention, lens formula, lens maker's formula, magnification, mirror formula, uses, and four fully solved numerical problems.
21 September, 2026 · 18 min readA complete Class 12 Physics & Chemistry guide to Faraday's laws — electromagnetic induction (first & second law, EMF formula, Lenz's law, magnetic flux) and Faraday's laws of electrolysis, with diagrams, right-hand rule, and worked examples.
23 September, 2026 · 18 min readWhat is a line segment, how many endpoints does it have, and how do you find its length and midpoint? A complete, diagram-based guide to one of geometry's most fundamental building blocks.
01 October, 2026 · 13 min readWhat is a magnet, how many types of magnets exist, and how do bar, horseshoe, ring, disc, and neodymium magnets differ? A complete, diagram-based guide to magnetism, magnetic materials, and everyday uses.
30 September, 2026 · 14 min readA complete, exam-focused guide to permutation and combination — clear definitions, the nPr and nCr formulas, the key difference between the two, worked examples, and practice questions for Class 11, Class 12, and JEE Mains.
28 September, 2026 · 16 min readA complete guide to dog breeds: how many exist, the seven breed groups, small, medium and large dogs, best family and apartment breeds, hypoallergenic dogs, white and Japanese breeds, working dogs, and a fact-based look at “aggressive” breeds.
25 September, 2026 · 15 min readA simple, complete guide to all four laws of thermodynamics — thermal equilibrium, conservation of energy, entropy, and absolute zero — with definitions, diagrams, real-life examples, and why perpetual motion machines can never work.
22 September, 2026 · 16 min readDetermine the wavelength of light emitted by a Helium-Neon laser and the grating element of a plane diffraction grating using a simple geometric method.
21 September, 2026 · 20 min readDetermine the refractive index of the material of a given glass prism by measuring the angle of the prism and the angle of minimum deviation (angle of minimum deviation method).
21 September, 2026 · 20 min readDetermine the focal length of a given convex lens by measuring object and image distances on an optical bench, and verify the lens formula 1/v − 1/u = 1/f.
21 September, 2026 · 40 min readDetermine the focal length of a given concave mirror by the u-v method and verify the mirror formula 1/v + 1/u = 1/f.
21 September, 2026 · 20 min read