Interactive Physics Simulations for Students | Shikkha Web

Grade 8–12

Refraction of light

Change the angle and watch light bend. Snell's law, refractive index, critical angle and total internal reflection, explained simply with worked examples.

Grade 9–12

Ohm's law

Adjust voltage and resistance and watch the current change. Ohm's law formula, V-I graph, series and parallel resistors, with solved problems.

Grade 11

Projectile motion

Set the launch angle and speed and trace the path. Time of flight, maximum height and range formulas, why 45° goes farthest, with solved numbers.

Grade 9–11

Simple pendulum

Change length and gravity and time the swing. Simple pendulum period T = 2π√(L/g), SHM, energy conservation and finding g, with solved numbers.

Grade 10–12

Electric field

Drop positive and negative charges and watch the field lines form. Coulomb's law, E = kq/r², units and field-line rules, with solved examples.

Grade 11–12

Wave interference

Move two wave sources and watch bright and dark fringes appear. Superposition, constructive vs destructive conditions, fringe width, solved examples.

Grade 9–11

Free Fall

What is free fall? Drop a coin and a feather with and without air. Learn the free fall formulas for time, velocity and height (g = 9.8 m/s²) with worked examples.

Grade 10–12

Lens ray diagrams

Interactive convex and concave lens ray diagrams: drag the object through all six cases, see the three principal rays, and read u, v, f, magnification and power live.

Grade 9–11

Newton's Laws of Motion

Newton's laws of motion explained with an interactive cart: inertia, F = ma, momentum, impulse and action–reaction pairs, with examples and worked problems.

Grade 10–12

Spherical mirror ray diagrams

Drag an object in front of a concave, convex or plane mirror and watch the rays find the image. Mirror formula, magnification, all six cases, solved problems.

Grade 10–12

Electromagnetic Induction

What is electromagnetic induction? Drag a bar magnet through a coil and watch a centre-zero galvanometer. Learn Faraday's law e = −N dΦ/dt and Lenz's law with worked examples.

Grade 9–11

Conservation of Momentum and Collisions

What is the conservation of momentum? Collide two carts and drag the restitution slider from a sticking e = 0 to a bouncy e = 1. See momentum and kinetic-energy bars update live, with worked examples.

Grade 9–11

Work, Energy and Power

What is work, and what are the formulas for kinetic and potential energy and power? Release a cart on a curved track, watch energy turn to heat, with worked examples.

Grade 9–11

Inclined Plane

How does a block’s weight split on a slope, what is the angle of repose, and when does friction hold a block still or let it slide? Change the angle yourself and watch the force-arrow diagram.