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Introduction to Optics

Last Updated: 03 June 2026

Optics is the study of light and its behaviour when it travels through different media and interacts with objects. It explains how light is produced, how it moves in strai...read more

Last Updated: 01 May 2026

An electric generator is a device that converts mechanical energy into electrical energy. It plays a crucial role in producing electricity used in homes, industries, and p...read more

Graphical Representation of Motion

Last Updated: 25 March 2026

Motion is one of the fundamental concepts in physics, and understanding it becomes much easier when it is represented graphically. Instead of only relying on equations and...read more

Last Updated: 09 March 2026

Class 11 Physics introduces the fundamental principles that explain how the physical world works. It covers essential topics such as motion, forces, energy, gravitation, t...read more

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Physics

Physics-Class-11

Why do we tire lifting heavy objects?

Last Updated: 23 July 2025

Have you ever tried lifting a heavy box and felt your arms start to ache after just a few seconds? Whether you are moving furniture or carrying a backpack full of books, l...read more

Why does a passenger move outward when the bus turns?

Last Updated: 23 July 2025

Have you ever felt pushed outward when a bus takes a sharp turn? This happens due to inertia—your body wants to keep moving straight while the bus turns. As a result, you ...read more

Newton’s Third Law and Gun Recoil

Last Updated: 15 July 2025

Recoil refers to the backwards motion of a gun when it fires a bullet. This happens due to Newton’s Third Law — every action has an equal and opposite reaction. As the bul...read more

How does gravity affect the motion of an object?

Last Updated: 23 July 2025

Gravity is a fundamental force of nature that affects everything with mass. It is responsible for pulling objects toward the Earth and influencing their motion. This force...read more

State Gauss's Law for Magnetism

Last Updated: 23 July 2025

Gauss's Law in Magnetism states that the total magnetic flux through any closed surface is always zero. This means magnetic field lines never start or end, but form contin...read more

Mechanical Properties of Solids

Last Updated: 23 July 2025

Mechanical properties of solids are key to predicting or explaining their behaviours in response to external force and stress. Such properties enable a solid material to r...read more

Equilibrium of Concurrent Forces

Last Updated: 02 March 2026

Concurrent forces are two or more forces whose lines of action intersect at a single common point. When such forces act on a body and their vector sum is zero, i.e., all f...read more

Last Updated: 23 February 2026

A frame of reference is a coordinate system or viewpoint used to measure the position and motion of objects. It helps us describe whether an object is at rest or moving.Mo...read more

Coefficient of Linear Expansion

Last Updated: 23 July 2025

Coefficient of linear expansion is a constant that measures the change in a material's length due to the temperature change. It is denoted by α. Every material has a uniqu...read more

How to Calculate Centre of Mass

Last Updated: 23 July 2025

The center of mass of an object is the point at which the mass of the object is evenly distributed.It is the point where the object would balance if it were suspended from...read more

Methods to Determine Surface Tension

Last Updated: 23 July 2025

Surface tension is the property of a liquid surface that allows it to resist external forces. It plays a vital role in natural phenomena and is used in a wide range of ind...read more

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