Einstein equation of the photoelectric effect - Physics - eSaral
Hey, do you want to learn about the Einstein equation of the photoelectric effect? If yes. Then keep reading. Einstein's photoelectric equation Einstein explained the photoelectric effect using the quantum nature of radiation. The emission of a photoelectron is a result of the interaction of one photon with a loosely bound electron in which the photon is completely absorbed by the electron. Some part of incident energy equal to work function is used to remove an electron from metal and remaining...
Read More →Photoelectric Effect Class 12 – Definition, Laws, Experiment & JEE Tips
Home Modern Physics Photoelectric Effect Class 12 India's Best Exam Preparation for Class 12th - Download Now 🚀 Checkout eSaral Courses What is the photoelectric effect? The emission of electrons from the surface of a metal when light of a suitable frequency falls on it is called the photoelectric effect. The ejected electrons are called photoelectrons The current produced due to emitted electrons is called photocurrent. The photoelectric effect proves the quantum nature of radiation. The classi...
Read More →Circular Motion 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 the 12th Board. When you don’t have time to go through chapter notes in detail, learn and revise the most important key concepts and formulae here. [embed]https://youtu.be/StyhYZ8OKQg[/e...
Read More →Mind Maps for Circular Motion Revision - Class XI
Get to learn all the formulae and important points of Circular Motion through this mind map. Download and share with your friends also. Download Download Download...
Read More →Types of radioactive decay - Alpha Decay, Beta Decay - eSaral
Hey, do you want to learn about the Types of Radioactive decay or Types of radioactive processes? If yes. Then you are at the right place. Types of radioactive decay (a) Alpha decay $_{z} X^{A}$ (parent nucleus) $\longrightarrow_{Z-2} Y^{\mathrm{A}-4}$ (daughter nucleus) $+{ }_{2} \mathrm{He}^{4}$ (alpha particle) e. g. ${ }_{92} \mathrm{U}^{238} \longrightarrow{ }_{90} \mathrm{Th}^{234}+{ }_{2} \mathrm{He}^{4}$ Alpha particle consists of 2 neutrons, 2 protons and carries a positive charge in ma...
Read More →What is binding energy in physics - Binding energy per nucleon - eSaral
Hey, do you want to learn about What is binding energy in physics? If yes. Then keep reading. Binding energy The energy required to break a nucleus into its constituent nucleons and place them at an infinite distance is called binding energy. The energy equivalent to mass defect is called binding energy. This is the energy with which the nucleons are held together. The binding energies $(\sim \mathrm{MeV})$ are very large as compared to molecular binding energies $(\sim \mathrm{eV})$Binding ener...
Read More →Properties of nuclear force - What are Nuclear forces - eSaral
Hey, do you want to learn about the Properties of nuclear force? If yes. Then keep reading. What are Nuclear forces? The strong forces of attraction which firmly hold the nucleons in the small nucleus and account for the stability of the nucleus are called nuclear forces. Properties of Nuclear Forces The nuclear force is a short-range force. They are appreciable when the distance between nucleons is of the order of $2.2 \times 10^{-15} \mathrm{~m}$ They become negligible when the distance betwee...
Read More →Types of nuclei - Nuclear Physics class 12 - eSaral
Hey, do you want to learn about the Types of nuclei? If yes. Then keep reading Types of nuclei Isotopes These are nuclei of the same element having the same Z but different Ae.g. ${ }_{8} \mathrm{O}^{16},{ }_{8} \mathrm{O}^{17},{ }_{8} \mathrm{O}^{18}$ ${ }_{1} \mathrm{H}^{1},{ }_{1} \mathrm{H}^{2},{ }_{1} \mathrm{H}^{3}$ ${ }_{92} \mathrm{U}^{234},{ }_{92} \mathrm{U}^{235}, \underset{92}{\mathrm{U}^{238}}$ All isotopes of an element have the same chemical properties They occupy the same place i...
Read More →State and explain ohm's law - Ohm’s law and resistance - eSaral
Hey, do you want to learn about How to state and explain ohm's law? If yes. Then keep reading. Ohm’s Law: If the physical state i.e. temperature, nature of the material, and dimensions of a conductor remain unchanged then the ratio of the potential difference applied across its ends to the current flowing through it remains constant. $V \propto I$ Or $\mathrm{V}=\mathrm{I} \mathrm{R}$ where $R=\frac{V}{I}$ is resistance of conductor. $I=n$ e $A v_{d}$ $=n$ e $A \frac{e E}{m} \tau=\left(\frac{n e...
Read More →Charging and discharging of capacitor - Physics - eSaral
Hey, do you want to learn about the Charging and discharging of capacitors? If yes. Then you are at the right place. Charging and discharging of capacitors Charging When a capacitor C is connected to a battery through R then charging of capacitor takes place. The eqn. of emf at any time t is $R I+\frac{q}{C}=E$ $\frac{R d q}{d t}+\frac{q}{C}=E$ $\int_{0}^{Q} \frac{d q}{(C E-q)}$ $=-\int_{0}^{t} \frac{d t}{R C}$ This on solving gives $Q=Q_{0}\left(1-e^{-t / R C}\right)$ where $Q_{0}=C E$ Importan...
Read More →Combination of capacitors - Series, Parallel Combinations - eSaral
Hey, do you want to learn about the combination of capacitors? If so. Then keep reading. Combination of capacitors The process of replacing a combination of capacitors by a single equivalent capacitor is called the Combination of capacitors or grouping of capacitors. Capacitors in parallel Capacitors are said to be connected in parallel between two points if it is possible to proceed from one point to another point along different paths. Capacitors are said to be in parallel if the potential acr...
Read More →Motion of charged particle in electric field - Class 12 - eSaral
eSaral Class 12 Motion of charged particle in electric field - Class 12 - eSaral 🚀 Checkout eSaral Courses Motion of a charged particle in an Electric Field In case of motion of a charged particle in an electric field: A point charge experiences a force, whether it is at rest or in motion $\overrightarrow{\mathrm{F}}=\mathrm{q} \overrightarrow{\mathrm{E}}$ The direction of force is parallel to the field if the charge is positive and opposite to the field if the charge is negative. The electric f...
Read More →What are electric lines of force - Properties of lines of forces.
Hey, do you want to learn about What are electric lines of force? If yes. Then keep reading. Electric Lines of Force The idea of lines of force was introduced by Michel Faraday. A line of force is an imaginary curve the tangent to which at a point gives the direction of intensity at that point and the number of lines of force per unit area normal to the surface surrounding that point gives the magnitude of intensity at that point. Important points Electric lines of force usually start or diverge...
Read More →Heredity and Evolution - Class 10 Chapter 9 Short Notes (Mind Maps)
Get to learn all the formulae and important points of Heredity and Evolution through this Mind Map. Download and share with your friends also. India's Best Exam Preparation for Class 10th - Download Now Table of Content Mindmap Heredity and Evolution (PDF) download FAQs Download India's Best Exam Preparation for Class 10th - Download Now Download India's Best Exam Preparation for Class 10th - Download Now Revise Complete Science for Class 10. Frequently Asked Questions What is evolution? A1.The ...
Read More →Life Processes - Class 10 Chapter 6 Short Notes (Mind Maps)
Get to learn all the formulae and important points of Life Processes through this Mind Map. Download and share with your friends also. Download Join our Telegram channel for class 9th and 10th to get Free Study Material, Free Notes many more. India's Best Exam Preparation for Class 10th - Download Now Download India's Best Exam Preparation for Class 10th - Download Now Download Join our Telegram channel for class 9th and 10th to get Free Study Material, Free Notes many more. Download Download Jo...
Read More →Principle of parallel plate capacitors - Definition, Capacitance - eSaral
eSaral JEE JEE Main Principle of parallel plate capacitors - Definition, Capacitance 🚀 Checkout eSaral Courses Principle of Parallel plate capacitor Let an insulated metal plate A be given a positive charge till its potential becomes maximum. When another insulated plate B is brought near A. Then by induction inner face of B becomes negatively charged and the outer face becomes positively charged. The negative charge tries to reduce the potential of A and the positive charge tries to increase it...
Read More →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...
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