Ray Optics Tabletop Kit: explore how lenses work with this inexpensive experimentation kit featuring three parallel laser beams and 2-D versions of lenses and other shapes that use refraction to alter the direction of light. Here a doubly concave lens interacts with the beams from a doubly convex lens. ➡️ Follow the link in my profile for info on where to get this very affordable demo kit and other amazing items featured here on @physicsfun #optics #lens #convexlens #internalreflection #refracti

Two years ago, Physics Wallah began a bold journey—infusing AI into every step of a student’s learning path. ⁣⁣ ⁣⁣ Today, that vision is real. From NCERT textbooks that come alive with AI-powered summaries and solutions to a system that now solves 60,000 student doubts daily—without human intervention. ⁣⁣ ⁣⁣ But the real game changer? UPSC essay grading. What once took 7 days now takes just 30 seconds—thanks to GenAI—at 1/20th the cost. ⁣⁣ ⁣⁣ Sandeep Varma, Head of Data Science & Engineering of