Physics notes for competitive exams cover a wide range of topics, such as kinematics, dynamics, energy, waves, optics, and modern physics. These notes typically focus on the most important and frequently tested concepts, such as equations, formulas, and problem-solving techniques.
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The gravitational force between two objects depends mainly on two factors: Let’s explore this topic step by step. 👇 Introduction Gravity is one of the most important forces in the universe. It keeps planets in orbit, holds the atmosphere around Earth, and allows us to walk on the ground without floating away. In simple words, … Read more
Optics, the branch of physics dealing with light, often fascinates students and challenges aspirants preparing for competitive exams. A key concept within optics is the medium—the environment through which light travels. Light doesn’t always behave the same way; its speed, direction, and behavior depend on the medium it passes through. When you look into a … Read more
If you’ve ever seen a mirage on a hot road or wondered how optical fibers carry internet signals, you’ve already brushed against the magic of Total Internal Reflection (TIR). Let’s break it down step-by-step so you can understand it easily and remember it for your exams. What is Total Internal Reflection? When light passes from … Read more
A lever is a simple machine that helps us do work more easily by multiplying force. It plays a crucial role in everyday tools like scissors, pliers, seesaws, and even our body movements. Understanding levers is essential for students from Class 6–12, as it is frequently covered in NCERT Science, Physics basics, and competitive exams … Read more
Have you ever played with a magnet and seen how it sticks to some metals but not others? This amazing property is due to ferromagnetism! It is the reason why materials like iron, cobalt, and nickel become strong magnets. Ferromagnetism is an important topic in general science Physics and is often asked about in competitive … Read more
The speed of light is one of the most fundamental concepts in physics. From the Sun’s rays that brighten our world to the glow of a firefly at night, light is everywhere. Understanding it is crucial for competitive exams like SSC, RRB NTPC, UPSC, and state-level exams. This guide simplifies the concept of the speed … Read more
Sound is a type of energy that travels in waves. But have you ever wondered how fast sound moves? The speed of sound is how quickly sound waves travel through different materials like air, water, or metal. It depends on factors like temperature, pressure, and the medium through which it travels. In general, sound moves … Read more
Have you ever wondered how a microscope allows you to see tiny bacteria or how a telescope helps you observe distant stars? These instruments use lenses to magnify objects, making them appear larger than they actually are. The ability of an optical instrument to enlarge an image is called its magnifying power. In this post, … Read more
Ultrasonic sound is a fascinating topic that you might encounter in your exams, especially in subjects like Science and Physics. In this blog post, we’ll explore what ultrasonic sound is, how it works, and where we see its applications in the real world. Let’s break it down into simple sections, so you can easily understand … Read more
Condensation is the process in which water vapour in the air transforms into liquid water. This natural phenomenon is essential in various processes, from the water cycle to industrial applications. In this article, we will delve into the details of condensation, its significance, and some real-life examples. Understanding Condensation Condensation is the change of water … Read more
Concave mirrors, also known as converging mirrors, are curved mirrors that curve inward, resembling a portion of a sphere. These mirrors are used in various applications, from simple household items like makeup mirrors to complex scientific instruments such as telescopes and satellite dishes. Understanding how a concave mirror forms images is crucial for students, enthusiasts, … Read more
Electricity flows through wires because of a special kind of “push” called potential difference, also known as voltage. This push helps move tiny particles called electrons from one place to another inside an electrical conductor, like a wire. What is Potential Difference? Potential difference is the energy needed to move a charge (electron) from one … Read more
Electric current is one of the greatest discoveries that has made our lives easier. People have always been curious about lightning and how it forms. Even in ancient times, the Greeks studied magnetism and tried to understand electricity. The journey of electricity and current has developed over time. It started with Benjamin Franklin’s kite experiment … Read more
Have you ever wondered how electricity flows through wires? Ohm’s Law is a simple rule that explains the relationship between voltage (V), current (I), and resistance (R) in an electric circuit. It helps us understand how electric devices like bulbs, fans, and mobile chargers work. According to Ohm’s Law, when we increase the voltage, the … Read more
Have you ever looked into a mirror and seen yourself exactly as you are? That’s because a plane mirror creates an image that looks just like the real object! In this guide, we will explore how images are formed by plane mirrors, their properties, and important concepts for SSC, Banking, RRB NTPC, UPSC, and other … Read more
Have you ever wondered how a microscope helps us see tiny germs or how a telescope brings distant stars closer? These amazing devices are called optical instruments because they use light to help us see things more clearly. From eyeglasses to binoculars, these tools make our lives easier in many ways. In this guide, we … Read more
Sound is all around us! Whether it’s music, a ringing phone, or a person talking, sound waves help us hear different noises. But what makes sounds loud or soft, high or low, clear or unclear? These features are called the characteristics of sound. In this article, we will explore the different properties of sound, such … Read more
Work is an important concept in physics that we use in daily life. But in science, work has a special meaning. It is done when a force is applied to an object, and the object moves in the direction of the force. For example, lifting a book, pushing a door, or pulling a cart are … Read more
Total Internal Reflection (TIR) is a special light phenomenon where a ray of light bounces back completely instead of passing through a surface. This happens when light moves from a denser medium to a rarer medium at a certain angle. Understanding TIR is important for SSC, Banking, RRB NTPC, UPSC, and State exams, as it … Read more
A circuit in Physics is a closed loop or path that allows electrons to flow, creating an electric current. The basic components of a circuit include a power source (like a battery), conducting wires, a switch, and a device like a light bulb. There are many types of circuits, such as: Each type of circuit … Read more
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