1. What is dispersion? How is it caused? The phenomenon of the separation or splitting up of composite light into its constituent colours is called dispersion. Dispersion is caused on account of different refractive indices of the medium for different …
Chemical reactions are the processes in which new substances with new properties are formed. And there are several types of chemical reactions, of which some of important types are mentioned below. Combination reactions Decomposition reaction Displacement reactions Double displacement reactions …
Newton’s 1st Law The first law of motion sates that an object will not change its speed or direction unless an unbalanced force (a force which is distant from the reference point) affects it. Another name for the first law …
What is a heat engine? Heat engine is a device which converts heat into useful mechanical energy. Name the two types of heat engines. A) External combustion engine B) Internal combustion engine. Explain the basic principle of a heat engine. …
Chemical reactions are the processes in which new substances with new properties are formed. Only a rearrangement of atoms takes place in a chemical reaction. The substances which take part in a chemical reaction are called reactants. The new substances …
Just as distance and displacement have distinctly different meanings (despite their similarities), so do speed and velocity. Speed is a scalar quantity that refers to “how fast an object is moving.” Speed can be thought of as the rate at which an object covers …
Electrostatics is a branch of physics that deals with the electric charges at rest electric charges. Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον, …
Acceleration is a change in velocity over time. It is a vector quantity that is defined as the rate at which an object changes its velocity. Scroll down to know more about Acceleration.