Science > Physics > Stationary Waves > Vibration of String In this article, we shall study different modes of vibrations of string, the expression for its fundamental frequency of vibration. Concept of Overtones: Whenever a string or an air column is set into vibrations, the vibrations consist of the fundamental frequency accompanied by certain higher […]
Science > Physics > Stationary Waves > Sonometer Experiment In this article, we shall study construction and working of sonometer, and its use to verify the laws of string. Laws of Vibrating String: Law of Length: If the tension in the string and its mass per unit length of wire remains constant, then the frequency […]
Science > Physics > Stationary Waves > Melde’s Experiment In this article, we shall study Melde’s experiment of vibrating string and find the relation between the number of loops and the tension in the string. Melde’s Experiment for Longitudinal or Parallel Position: Melde’s experiment set up consists of a light string is tied to one […]
Science > Physics > Stationary Waves > Vibrations of Air Columns In this article, we shall study the vibrations of air columns in a pipe closed at one end, opened at other and in a pipe open at both ends. Vibrations of Air Columns in a Pipe Closed at One End: Consider a pipe closed […]
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 […]
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. […]
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 […]
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 […]
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 […]
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 […]