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Category: Physics

Resonance

Science > Physics > Stationary Waves > Resonance In this article, we shall study the phenomenon of resonance, its characteristics, advantages, and disadvantages. Free Vibrations: A body or a system capable of vibrating, when displaced from its position of rest, vibrates with a certain definite frequency. This frequency is characteristic of the body or the […]

Physics

Formation of Stationary waves

Post author By Hemant More
Post date February 3, 2020
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Science > Physics > Stationary Waves > Introduction to Stationary Waves Waves are classified as progressive waves and stationary waves. In this article, we shall study the meaning of stationary waves, their formation, and their characteristics. Mechanical waves: The waves which require an elastic medium for their propagation is called mechanical waves e.g. sound waves. […]

Tags Antinode, Displacement antinode, Displacement node, Mechanical wave, Node, Pressure antinode, Pressure node, Progressive wave, Reflection of wave, Stationary wave, Stationary waves, Wave

Physics

Numerical Problems on Newton’s Law of Cooling

Post author By Hemant More
Post date February 3, 2020
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Science > Physics > Radiation > Numerical Problems on Newton’s Law of Cooling In this article, we are going to study to solve numerical problems based on Newton’s law of cooling. Newton’s Law of Cooling: The rate of loss of heat by a body is directly proportional to its excess temperature over that of the […]

Physics

Stefan’s Law of Radiation

Science > Physics > Radiation > Stefan’s Law of Radiation In this article, we shall study Stefan’s law of radiation, Newton’s law of cooling, derivation of Newton’s law of cooling from Stefan’s law and to calculate the temperature of the solar surface. Stefan’s Law: Statement: The heat energy radiated per unit time per unit area […]

Physics

Concept of Black Body

Science > Physics > Radiation > Concept of Black Body In this article, we shall study the concept of a black body and its realization in practice. Perfectly Black Body: A body which absorbs all the radiant heat incident upon it is called a perfectly black body. Thus the coefficient of absorption of a perfectly […]

Physics

Kirchhoff’s law of Radiation

Post author By Hemant More
Post date February 3, 2020
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Science > Physics > Radiation > Kirchhoff’s law of Radiation In this article, we shall study Kirchhoff’s law of radiation and its theoretical and experimental proof. Statement: The ratio of the emissive power to the coefficient of absorption is constant for all substances at a given temperature and is equal to the emissive power of […]

Tags absorptivity, Adiathermanous, Coefficient of absorption, Coefficient of emission, Coefficient of reflectin, Coefficient of transmission, Diathermanous, Emissive Power, Emissivity, Kirchhoff's law, Prevost theory of heat exchanges, Radiation, Radient heat, Reflectivity, Ritchie's experiment, Transmtability

Physics

Introduction to Radiation

Post author By Hemant More
Post date February 3, 2020
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Science > Physics > Radiation > Introduction to Radiation The different modes of heat transfer are conduction, convection, and radiation. In this article. we shall study radiation. Radiation: Radiation is a process of transfer of heat in the form of electromagnetic waves for which material medium is not necessary. Radiant Heat: The thermal energy which […]

Tags absorptivity, Adiathermanous, Coefficient of absorption, Coefficient of emission, Coefficient of reflectin, Coefficient of transmission, Diathermanous, Emissive Power, Emissivity, Prevost theory of heat excahnges, Radiation, Radient heat, Reflectivity, Transmtability

Physics

Numerical Problems on Kinetic Energy and Angular Momentum

Post author By Hemant More
Post date February 3, 2020
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Science > Physics > Rotational Motion > Numerical Problems on Kinetic Energy and Angular Momentum In this article, we shall study problems based on the change in kinetic energy and the change in angular momentum of a rotating body. Example – 01: A disc begins to rotate from rest with a constant angular acceleration of […]

Tags Angular momentum, Axis of rotation, Conservation of Angular Momentum, Kinetic energy, Moment of inertia, Parallel Axes Theorem, Perpendicular Axes Theorem, Physical significance, Principle of Parallel Axes, Principle of Perpendicular Axes, Radius of gyration, Rigid body, Rotational motion, Torque

Physics

Angular Momentum

Science > Physics > Rotational Motion > Angular Momentum In this article, we shall study important physical quantity related to the rotational motion called the angular momentum. The angular momentum of a rigid body about a given axis is defined as the product of its moment of inertia about the given axis and its angular […]

Tags Angular momentum, Axis of rotation, Conservation of Angular Momentum, Kinetic energy, Moment of inertia, Parallel Axes Theorem, Perpendicular Axes Theorem, Physical significance, Principle of Parallel Axes, Principle of Perpendicular Axes, Radius of gyration, Rigid body, Rotational motion, Torque

Physics

Principles of Parallel and Perpendicular Axes

Post author By Hemant More
Post date January 29, 2020
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Science > Physics > Rotational Motion > Principles of Parallel and Perpendicular Axes In this article, we shall study the principle of parallel axes and the principle of perpendicular axes and their applications. Principle of Parallel Axes or Parallel Axes Theorem: Statement : The moment of inertia of a rigid body about any axis is […]

Tags Parallel Axes Theorem, Perpendicular Axes Theorem, Principle of Parallel Axes, Principle of Perpendicular Axes