Gauss law in electrostatics - Application, Important Points - eSaral
Hey, do you want to learn about Gauss Law in electrostatics? If yes. Then keep reading. Gauss law It relates the total flux of an electric field through a closed surface to the net charge enclosed by that surface. According to it, the total flux linked with a closed surface is $1 / \varepsilon_{0}$ times the charge enclosed by the closed surface, Mathematically $\oint_{\mathrm{s}} \overrightarrow{\mathrm{E}} \cdot \overrightarrow{\mathrm{d} s}=\frac{\mathrm{q}}{\varepsilon_{0}}$ Important points...
Read More →State and explain coulomb law - Class 12 Physics - eSaral
Hey, do you want to learn how to State and explain Coulomb law? If yes. Then keep reading. Coulomb's law The force of attraction or repulsion between two stationary point charges is directly proportional to the product of charges and inversely proportional to the square of the distance between them. This force acts along the line joining the center of two charges. If $q_{1} \ q_{2}$ are charges, r is the distance between them and F is the force acting between them Then, $F \alpha q_{1} q_{2}$ $\...
Read More →Principle of superposition of waves - Types of Interference - eSaral
Hey do you learn about the Principle of superposition of waves? If so. Then keep reading. Principle of Superposition Two, or more, progressive waves can travel simultaneously in a medium without affecting the motion of one another. Therefore, the resultant displacement of each particle of the medium m any instant is equal to the vector sum of the displacements produced by the two waves separately, this principle is called the 'principle of superposition. $y=y_{1} \pm y_{2} \pm$ $\vec{y}=\vec{y}_...
Read More →Probability - Class 10 Chapter 15 Revision Video
The Revision series is designed for all Class 10 aspirants to provide quick revision of all the chapters of Class 10th with important key concepts. The revision videos help you make the best use of your limited time left for revision. It is especially time-saving for all students who are going to appear for 10th Board. When you don’t have time to go through chapter notes in detail, learn and revise most important key concepts and formulae here. Click for Complete Class 10 Mathematics Revision Se...
Read More →Types of Waves in Physics - Definition, Types - eSaral
Hey, do you want to learn about the types of Waves in Physics? If so. Then keep reading. Waves: A wave is a disturbance that propagates energy from one place to the other without the transport of matter. It is an ill spread over a region of space without clear-cut boundaries. It cannot be said to be localized here or there. For the propagation of a wave, there are two properties in a medium. Elasticity Inertia Types of Waves: Mechanical and Electromagnetic waves A wave may or may not require a m...
Read More →What is capillarity in Physics - Applications of Capillarity - eSaral
Hey, do you want to know what is capillarity in Physics? If yes. Then keep reading What is Capillarity The rise and the fall of liquids in small cross-sectional area elements such as tubes known as capillarity. Tubes that have a very small diameter are known as Capillary. Capillarity Let a glass capillary tube of uniform bore be dipped vertically in a liquid that wets the glass. Such a liquid rises in the tube forming a concave meniscus as already discussed. since the force of surface tension te...
Read More →Friction Revision Videos - Class XI, JEE, NEET
The Revision series is designed for all JEE NEET aspirants to provide quick revision of all the chapters of Class 11th 12th with important key concepts. The revision videos help you make the best use of your limited time left for revision. It is especially time-saving for all students who are going to appear for 12th Board. When you don’t have time to go through chapter notes in detail, learn and revise most important key concepts and formulae here. [embed]https://www.youtube.com/watch?v=GU_fAEW...
Read More →Mind Maps for Friction Revision - Class XI
Get to learn all the formulae and important points of Friction through this mind map. Download and share with your friends also. Download Download...
Read More →What is surface tension in physics - Example, Effects - eSaral
Hey, do you want to know what is Surface tension in physics? If so. Then keep reading. Surface Tension Surface tension is the property of a liquid, which depends on the nature of the liquid. Every liquid has a tendency to minimize its surface area. So it behaves like a stretched elastic membrane of rubber. Now it is clear that there is a tension in the surface of a liquid and it is called surface tension. Surface tension is a scaler quantity. Definition of surface tension: The surface tension of...
Read More →State the law of conservation of angular momentum - eSaral
Hey, do you want to know how to state the law of conservation of angular momentum? If so. Then you are at the right place. Angular momentum The moment of linear momentum of a moving particle with respect to the axis of rotation is known as angular momentum. It is a vector quantity, which is often represented by $\overrightarrow{\mathrm{L}}$ or $\overrightarrow{\mathrm{J}}$. It is an axial vector (i.e. always perpendicular to the plane of motion) Angular momentum $\overrightarrow{\mathrm{J}}=\ove...
Read More →Types of Equilibrium - What is Equilibrium? - eSaral
Hey, Do you want to learn about the Types of Equilibrium? If so. Then you are at the right place. What is Equilibrium? A body is said to be in translatory equilibrium if the net force acting on the body is zero, $\overrightarrow{\mathrm{F}}_{\text {net }}=0$ If the force are conservative then $\mathrm{F}=-\frac{\mathrm{dU}}{\mathrm{dr}}$ For equilibrium F = 0. So, $-\frac{d U}{d r}=0$ Or $\frac{\mathrm{dU}}{\mathrm{dr}}=0$ At equilibrium position slope of U-r graph is zero or the potential energ...
Read More →Work energy theorem Derivation - Easy Step by Step Explanation.
Hey, are you looking for the Work-Energy Theorem Derivation? If so. Then keep reading Work energy theorem Consider a constant force $\vec{F}$ acting on a particle of mass $\mathrm{m}$. Let a acceleration 'a' be produced in the direction of force $\overrightarrow{\mathrm{F}},$ say along $\mathrm{X}$ -axis. Let the resultant force vary in magnitude only, not in direction. The work done by the resultant force in displacing the particle from $x_{0}$ to $x$ is $W=\int_{i}^{f} \vec{F} \cdot \overright...
Read More →Efficiency of Carnot engine | What is Carnot cycle - Definition
Hey, do you want to learn about the Efficiency of Carnot engine? If so. Then keep reading Carnot cycle: Carnot devised an ideal engine that is based on a reversible cycle of four operations in succession: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. There are four thermodynamical processes isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. The main parts of Carnot’s engine are: Source of Heat: A hot body ...
Read More →Zeroth law of thermodynamics - Explanation, Defination.
Zeroth law of thermodynamics Zeroth law of thermodynamics states that If objects A and B are separately in thermal equilibrium with a third object C (the thermometer), then objects A and B are in thermal equilibrium with each other. Zeroth law of thermodynamics introduces thermodynamic quantity called temperature. Two objects (or systems) are said to be in thermal equilibrium if their temperatures are the same. In measuring the temperature of a body, it is important that the thermometer is in th...
Read More →Heat transfer by convection - What is Convection?- eSaral
Heat transfer by convection The Process in which Heat transfer occurs between a fluid that is in contact with a surface called heat transfer by convection. What is Convection? Convection requires a medium and is the process in which heat is transferred from one place to other by the actual movement of a heated substance (usually fluid). The type of convection which results from difference in densities is called natural convection (for example, a fluid in a container heated through its bottom). H...
Read More →What is Conduction - Explanation, Definition - eSaral
What is Conduction Conduction is that mode of transmission of heat in which heat is transferred from a region of higher temperature to a region of lower temperature by the aid of particles of the body without their actual migration. In conduction atoms or molecules near the hot end absorb energy and hence their amplitude of vibration about their mean position increases due to which they collide with other neighbouring atoms or molecules and thus transfer a part of energy, to them and so on. In s...
Read More →First law of thermodynamics in physics - Limitations, Applications
Hey, Do you want to learn about the first law of thermodynamics in physics? If yes. Then you are at the right place. The first law of thermodynamics A gas in a cylinder with a movable piston is a simple example of a thermodynamic system. Let this system changes from an initial equilibrium state i to a final equilibrium state f in a definite way, the heat absorbed by the system being dQ1 and the work done by the system being dW1 and system change its state through path 1, again for path 2 heat ab...
Read More →Newton's Laws of Motion - First, Second, and Third Law - eSaral
Hey, do you want to learn about Newton's Laws of Motion? if so. Then you are at the right place. Newton's first law of motion Every body continues its state of rest or of uniform motion until an external force is applied over it. Newton's I law gives the qualitative definition of force, according to which "force is that external cause which tends to change or actually change the state of motion of the body". Newton's I law is called "Law of Inertia" by Galelio. Inertia is that property of body o...
Read More →Nuclear fission and fusion - Physics Class 12 - eSaral
Hey, do you want to learn about Nuclear fission and fusion? if so. Then you are at the right place. Nuclear fission The process of splitting of a heavy nucleus into two nuclei of comparable size and release of large energy is called fission. ${ }_{92} \mathrm{U}^{235}+{ }_{0} \mathrm{n}^{1} \longrightarrow{ }_{2}{ }_{2} \mathrm{U}^{236} \longrightarrow{ }_{56} \mathrm{Ba}^{141}+{ }_{36} \mathrm{Kr}^{92}+3{ }_{0} \mathrm{n}^{1}+$ energy $\mathrm{y}$ U235 nucleus captures a thermal neutron This fo...
Read More →Conservative and Non Conservative forces - Physics - eSaral
Hey, do you want to learn about the Conservative and Non-Conservative forces? if so. Then you are at the right place. Conservative force A force is said to be conservative if the work done by or against the conservative force :(a) Is independent of path and depends only on initial and final positions(b) Does not depend on the nature of path followed between the initial and final positions. Examples of Conservative Force All central forces are conservative like gravitational, electrostatic, elast...
Read More →Statistics - Class 10 Chapter 14 Revision Video
The Revision series is designed for all Class 10 aspirants to provide quick revision of all the chapters of Class 10th with important key concepts. The revision videos help you make the best use of your limited time left for revision. It is especially time-saving for all students who are going to appear for 10th Board. When you don’t have time to go through chapter notes in detail, learn and revise most important key concepts and formulae here. Click for Complete Class 10 Mathematics Revision Se...
Read More →JEE (MAIN) 2021 Chemistry 24 Feb 2021 (SHIFT-1)
Get the JEE Main 2021 Questions with Solution (Reproduced with Memory Retention) here predicted by eSaral faculties. The paper are of 24 February,2021(SHIFT-1) Time: 9:00am to 12:00pm) Duration : 3 Hours | Maximum Marks : 300 JEE MAIN 24 February 2021- Shift-1 Physics Questions with Solutions JEE MAIN 24 February 2021- Shift-1 Mathematics Questions with Solutions...
Read More →JEE (MAIN) 2021 Physics 24 Feb 2021 (SHIFT-1)
Get the JEE Main 2021 Questions with Solution (Reproduced with Memory Retention) here predicted by eSaral faculties. The paper are of 24 February,2021(SHIFT-1) Time: 9:00am to 12:00pm) Duration : 3 Hours | Maximum Marks : 300 JEE MAIN 24 February 2021- Shift-1 Mathematics Questions with Solutions JEE MAIN 24 February 2021- Shift-1 Chemistry Questions with Solutions...
Read More →JEE (MAIN) 2021 Mathematics 24 Feb 2021 - SHIFT 1
Get the JEE Main 2021 Questions with Solution (Reproduced with Memory Retention) here predicted by eSaral faculties. The paper are of 24 February,2021(SHIFT-1) Time: 9:00am to 12:00pm) Duration : 3 Hours | Maximum Marks : 300 JEE MAIN 24 February 2021- Shift-1 Physics Questions with Solutions JEE MAIN 24 February 2021- Shift-1 Chemistry Questions with Solutions...
Read More →Probability - Class 9 Chapter 15 Revision Video
The Revision series is designed for all Class 9 aspirants to provide quick revision of all the chapters of Class 9th with important key concepts. The revision videos help you make the best use of your limited time left for revision. It is especially time-saving for all students who are going to appear for 9th Exams. When you don’t have time to go through chapter notes in detail, learn and revise most important key concepts and formulae here. Click for Complete Class 9 Mathematics Revision Series...
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