All simulations · Class 11 · Physics

Class 11 Physics simulations

124 free interactive Class 11 Physics simulations covering 14 NCERT chapters, including Thermodynamics, Mechanical Properties of Fluids, Motion in a Plane. Change the variables, watch the result, and learn for school exams, JEE Main and NEET.

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Thermodynamics (9 simulations)

Adiabatic compression and expansion — Move an insulated piston and trade mechanical work with the gas’s internal energy.
Carnot heat engine — Follow two isotherms and two adiabats around a reversible cycle.
First law of thermodynamics — Add heat and let the gas do work; track its internal energy.
Heating gas at constant pressure — Weights hold the piston pressure fixed while you heat the gas. Track Q, W and ΔU.
Entropy in isothermal expansion — Expand an ideal gas reversibly at constant temperature and connect heat to entropy.
Petrol engine (Otto cycle) — Compress the fuel–air mixture more and the ideal efficiency rises — watch the piston and crank turn.
Work from a rectangular P–V cycle — Take a monatomic gas round a rectangular cycle. The enclosed area is the net work per cycle.
Refrigerator and heat pump — Pump heat from a cold box to a warm room. The ideal coefficient of performance depends only on the…
Gas under a piston — Compress or heat an ideal gas and watch its pressure respond.

Mechanical Properties of Fluids (10 simulations)

Lift on an aerofoil — Air flows faster over the curved top of a wing. Bernoulli’s principle gives the pressure difference.
Float or sink? — Change the densities and watch a block find its level in a fluid.
Capillary rise and depression — Dip a narrow tube in a liquid and see surface tension lift or depress the meniscus.
Flow through a narrowing pipe — Change pipe areas and compare the two fluid speeds.
Pressure inside drops and bubbles — Surface tension squeezes a drop. A soap bubble has two surfaces, so its excess pressure doubles.
Hydraulic lift (Pascal) — Press a small piston and lift a big load on the wide piston.
Pressure at depth in a tank — Lower a pressure probe into a tank and change the liquid. Find the force on one side wall too.
Viscous drag and terminal speed — Release a small sphere in thick liquid and watch drag grow until the forces balance.
Water jet from a tank — Change the water head and follow the jet from a small hole.
Venturimeter — Water speeds up through a narrow throat and its pressure drops — read the drop on the vertical tubes.

Motion in a Plane (10 simulations)

Projectile with air resistance — Add linear air drag and compare the path with the ideal vacuum parabola.
Uniform circular motion — Watch speed stay constant while velocity changes direction.
Conical pendulum — Whirl a bob in a horizontal circle and see how the cone angle sets the speed and period.
Horizontal projectile — Launch a ball horizontally from a cliff and watch its parabolic drop.
Projectile motion — Launch an object and see how horizontal and vertical motion combine to form its path.
Projectile landing on a slope — Launch above a hillside and locate the point where the projectile meets the rising ground.
Six particles chasing on a hexagon (HC Verma) — Six particles at the corners of a regular hexagon of side a each move at constant speed v toward the…
Three particles chasing each other (HC Verma) — Three particles at the corners of an equilateral triangle each move at speed v straight toward the next…
Boat crossing a river — Steer upstream and combine boat velocity with river flow.
Vector addition: the parallelogram — Resolve two vectors into components and build their resultant, head to tail.

Laws of Motion (10 simulations)

Angle of repose — Tilt a rough plane until the block begins to slide. The critical angle reveals μs.
Atwood machine — Connect two hanging masses over a pulley and predict which side descends.
Banked road turn — Bank a circular road so a car can turn without friction.
Two connected blocks — Pull a pair of blocks joined by a string and find the shared acceleration.
Apparent weight in an elevator — Accelerate an elevator and see how the floor’s normal reaction changes a weighing-scale reading.
Forces and friction — Push a block and see when the applied force overcomes friction.
Recoil of a gun — Fire a bullet from a gun on a frictionless cart. Momentum conservation fixes the recoil speed.
Impulse: catching an egg — Stop a falling object over a short or long time and compare the average force needed.
Block on an incline — Resolve gravity along a slope and include friction.
A load held by two ropes — Change the symmetry of two supporting ropes and calculate their tensions.

System of Particles and Rotational Motion (9 simulations)

Conservation of angular momentum — Pull two rotating masses inward and watch the angular speed increase.
Centre of mass of three masses — Change three masses on a light triangular plate. The plate balances only on its centre of mass.
Moment of inertia of shapes — Compare how mass distribution changes rotational inertia.
Parallel-axis theorem — Move a rotation axis away from the centre of a uniform disc and feel its growing inertia.
A rod as a physical pendulum — Swing a uniform rod about one end and connect rotational inertia with its oscillation period.
Rolling without slipping — Compare the motion of the centre and a point on a wheel.
Rolling race: ring, disc, spheres — Release four shapes of equal radius down the same incline. The moment of inertia decides the winner.
Torque and rotation — Apply a tangential force at different distances from a pivot and spin the disc.
Topple or slide? — Push a tall block with a growing force. It either slides first or tips over its front edge first.

Motion in a Straight Line (8 simulations)

Average vs instantaneous velocity — Shrink the time interval and watch the secant slope approach the tangent slope on the x–t graph.
Reaction and braking distance — Follow a car through reaction time, braking, and a complete stop.
The catch-up problem — Release a faster cart after a delay and find where it catches a moving target.
Motion in one dimension — Follow a cart and watch its position graph curve as its velocity changes.
Rain and the tilted umbrella — Walk through vertical rain and find the umbrella tilt that keeps you dry using relative velocity.
Relative velocity — Compare two carts moving along parallel tracks.
Vertical throw and the turning point — Throw a ball upward and follow height, velocity, and acceleration through its highest point.
Area under a v–t graph — Read displacement as the area beneath a velocity–time graph.

Work, Energy and Power (9 simulations)

Ballistic pendulum — Embed a projectile in a suspended block and infer the height it can swing.
Elastic collision — Follow two masses before and after a head-on elastic collision.
Conservation of energy — Watch gravitational potential energy turn into kinetic energy on a frictionless track.
Power of a lifting motor — Raise a load at constant speed and compare work with the rate of doing work.
Glancing collision of two balls — Strike a stationary ball off-centre. Vary the impact offset and the coefficient of restitution.
Spring launcher and energy transfer — Release a compressed spring and watch elastic potential energy turn into the cart’s kinetic energy.
Work done by a variable force — A force that grows with displacement pushes a block. The work is the area under the F–x graph.
Motion in a vertical circle — Whirl a stone on a string in a vertical circle. Below √(5gR) at the bottom, the string goes slack.
Work done by a force at an angle — Change the direction of a force and see how much work it does.

Waves (11 simulations)

Beats: two notes, one pulsing sound — Superpose two nearby frequencies and see the amplitude rise and fall in beats.
Doppler effect — Move a sound source and watch its wavefronts crowd together ahead.
Open and closed organ pipes — Choose a pipe type and harmonic. See the standing wave of air displacement inside the pipe.
Pulse reflection at a boundary — Send a pulse between two strings and compare its reflected amplitude and sign.
Resonance tube: speed of sound — Hold a vibrating tuning fork over a tube whose air column is set by a water level. Find the first and second…
Ripple tank: two-source interference — Two dippers make circular waves on water. Watch lines of calm water appear where the waves cancel.
Sonometer: frequency and length — Press a vibrating tuning fork on the sonometer box and move the bridge until the paper rider on the wire…
Standing waves on a string — Form nodes and antinodes between two fixed ends.
Wave speed on a stretched rope — Flick a rope and time the pulse. The speed depends on tension and mass per unit length.
Superposition of two waves — Add two travelling waves and watch the resultant form.
Travelling wave — Change amplitude, wavelength and frequency to see a wave move through a medium.

Thermal Properties of Matter (9 simulations)

Bimetallic strip — Bond two metals and heat them. The one that expands more ends up on the outside of the curve.
Mixing hot and cold water — Watch two water samples approach their equilibrium temperature.
Thermal expansion — Heat a metal rod and measure the small increase in its length.
Steady heat conduction — Build a temperature gradient across a wall and follow heat from the hot face to the cold face.
Heating curve: ice to steam — Heat ice at constant power and track temperature through melting and boiling.
Newton’s law of cooling — Watch a hot body approach room temperature.
Heating with specific heat — Add heat to a substance and compute its temperature rise.
Net thermal radiation — Compare radiation emitted by a warm surface with radiation absorbed from its surroundings.
Anomalous expansion of water — Water is densest at 4 °C. Cool a pond and see why lakes freeze from the top down.

Kinetic Theory (7 simulations)

Brownian motion — A pollen-sized particle is jostled by invisible molecules. Its mean-square displacement grows linearly with…
Equipartition of energy — Compare internal energy for different active degrees of freedom.
Pressure vs temperature — Heat a sealed rigid container and watch the pressure climb.
Molecules in motion — Heat a gas and watch its particles move faster inside a container.
Maxwell–Boltzmann speed distribution — Compare a gas at two temperatures and distinguish most probable, mean, and RMS speeds.
Molecular mean free path — Follow a molecule through successive collisions in a dilute gas.
Pressure from molecular collisions — Molecules strike the walls of a box. Each bounce delivers momentum 2mv_x; together they make pressure.

Mechanical Properties of Solids (9 simulations)

Compression and bulk modulus — Apply uniform pressure and compare a material’s change in volume.
Elastic energy stored in a wire — Load a wire and calculate the strain energy stored per unit volume.
Stretching a spring — Pull the block and see how spring stiffness sets its extension.
Poisson’s ratio: stretch and thin — Stretch a wire and watch it get thinner. The lateral strain is a fixed fraction of the longitudinal strain.
Shear deformation — Push sideways on a bonded block and connect shear stress to angular deformation.
Springs in series and parallel — Join two springs and compare how much the same load stretches the combination.
Stress–strain curve — Load a wire and trace it through its elastic and plastic regions.
Thermal stress in a clamped rod — Heat a rod held between rigid walls. It cannot expand, so a large compressive stress builds up.
Young’s modulus — Stretch a rod under tensile load.

Oscillations (9 simulations)

Coupled pendulums — Join two pendulums with a weak spring. Energy slowly swaps between them in beats.
Damped harmonic motion — Add velocity-dependent resistance to a spring–mass system.
Driven oscillations and resonance — Drive a damped oscillator near its natural frequency and watch its steady-state response build in amplitude.
Simple pendulum — Set the length and release angle to watch a pendulum swing.
Energy exchange in SHM — Watch kinetic and potential energy trade places as a mass oscillates.
Displacement, velocity, acceleration — Follow the three SHM curves and see how they line up in phase.
Mass–spring oscillation — Watch a mass oscillate around a spring’s equilibrium position.
Oscillating liquid in a U-tube — Displace the liquid in a U-tube and release it. The column oscillates in simple harmonic motion.
Mass on a vertical spring — Hang a mass on a spring: it settles at a new equilibrium and oscillates about it.

Units and Measurements (7 simulations)

Dimensional analysis of a pendulum — Test which quantities can set a pendulum’s period by matching dimensions on both sides.
Propagating errors: density of a cube — Measure a cube’s side and mass with instrument uncertainty and see how the errors combine in ρ = m/a³.
Parallax: view from the right angle — Move the viewing direction and see why a raised pointer must be read straight on.
Micrometer screw gauge — Hold a real micrometer screw gauge: turn the thimble on the stage (drag up/down or sideways) until the…
Spherometer — Lower the central screw onto a curved lens and calculate its radius of curvature from the sagitta.
Measurement uncertainty — Combine length uncertainties when calculating an area.
Vernier caliper — Hold a real vernier caliper: drag the sliding jaw on the stage until it touches the object, then read the…

Gravitation (7 simulations)

Falling through a tunnel in the Earth — Drop a ball into a straight frictionless tunnel through a uniform planet. It oscillates in SHM.
Escape from a planet — Explore escape speed for planets with different mass and radius.
Geostationary orbit — Pick an orbital period and find the radius where a satellite keeps pace with the turning Earth.
Satellite orbit — Move a satellite to another altitude and compare its speed and orbital period.
Gravity above and below Earth — Move a probe from inside Earth into space and compare the two different gravity laws.
Kepler’s elliptical orbit — Follow a planet around an elliptical orbit with the star at one focus.
Energy of a circular orbit — Raise a satellite and split its energy into kinetic and potential parts.