Science > Chemistry > Chemical Thermodynamics and Energetics > Bond Enthalpy In this article, we shall study the concept of bond enthalpy. During the formation of the bond, energy is evolved or released. Thus the bond formation reaction is exothermic. Due to the release of energy molecule formed is at a low energy level and […]
Science > Chemistry > Chemical Thermodynamics and Energetics > Heat of Reaction Of Different Processes In this article, we shall study change in enthalpy for different chemical processes. Enthalpy of Formation (ΔfH° or ΔformationH°): The change in enthalpy of a chemical reaction at a given temperature and pressure, when one mole of the substance is formed […]
Science > Chemistry > Chemical Thermodynamics and Energetics > Heat of Reaction The branch of chemistry which deals with the quantitative study of thermal or heat changes in various chemical reactions is known as thermochemistry. In this article, We shall discuss very important concept of chemistry i.e. heat of reaction. Thermochemical Equation: An equation which […]
Science > Physics > Interference of Light > Numerical Problems on Fringe Width In this article, we shall study numerical problems based on Young’s experiment and biprism experiment to find the fringe width of the interference pattern and to find the wavelength of light used. Example – 12: In a biprism experiment, the slit is […]
Science > Physics > Interference of Light > Numerical Problems on Fringe Width In this article, we shall study numerical problems based on Young’s experiment and biprism experiment to find the fringe width of the interference pattern and to find the wavelength of light used. Example – 01: In Young’s experiment, the distance between the […]
Science > Physics > Interference of Light > Concept of Fringe Width and Path Difference In this article, we shall study Young’s double-slit experiment to demonstrate interference of light and also derive expressions for path difference and fringe width. Young’s Double Slit Experiment: The Young’s double-slit experimental arrangement consists of a pinhole ‘S’ punched on […]
Science > Physics > Interference of Light > Numerical Problems on Bright and Dark Bands In this article we shall study problems, to determine the nature of interference at a point i.e. to decide whether the point is a bright point or dark point. Example – 01: The optical path difference between two identical waves […]
Science > Physics > Interference of Light > Interference of Light In this article, we shall study the phenomenon of interference of light, conditions for constructive and destructive interference. Terminology: Constructive Interference of Light: When two light waves of same frequency arriving at a point, meet each other in the same phase i.e. the crest […]
Science > Physics > Wave Motion > Sound Waves In this article, we shall study sound waves and their nature. Similarly, we shall derive the velocity of sound in air and studying the factors affecting the velocity of sound in air. Longitudinal Nature of Sound waves: Sound waves are the longitudinal waves. It can be […]
Science > Physics > Wave Motion > Numerical Problems on Dopler Effect In this article, we shall study to calculate the apparent frequency of a source using the Doppler effect. Example – 01: A whistle of frequency 420 Hz is sounded on the roadside. Find the apparent frequency of the whistle for a motorist driving […]