As long as the internal alignment of the particles has not been changed the magnet can be remagnetized. The magnet can be magnetised again by... View Article
Permanent magnets are made using ferromagnetic materials like iron, cobalt, nickel etc. Alloys of rare earth metals are also used to make... View Article
A horseshoe magnet is one type of permanent magnet. Since both the poles of the horseshoe magnet are in the same direction it creates a strong... View Article
Ultrasounds are sound waves having a frequency above 20,000Hz. Ultrasound is a mechanical wave. It requires a material medium for propagation.... View Article
Resistance is measured in Ohms. So, a higher value of ohms simply means a higher value of resistance. If the resistance is high then there will... View Article
Repulsion is the force that pushes the objects away from each other. The repulsive force acts between bodies of the same charge or same magnetic... View Article
In physics, weight is the force that acts on a particular mass due to gravity. The unit of weight is the same as that of force. Weight is... View Article
Insulators can be charged by rubbing together. The substance that gives electrons gets positively charged and the substance that gains electrons... View Article
When two sources are mutually coherent it means that they have the same frequency and waveform. The phase difference between the two waves is a... View Article
Newton's rings consist of alternate bright and dark circular concentric rings obtained as a result of interference at a thin film of uniformly... View Article
Light travels in a straight line in the given medium. When the light rays travel from one medium to another there is a bending of light.... View Article
The fringe spacing or fringe width is the distance between two consecutive bright or dark fringes. In Young's double-slit experiment all the... View Article
The height to which a liquid will rise up a narrow tube will depend on the diameter of the tube and the temperature of the liquid. The smaller... View Article
The molecules in gases state have the highest kinetic energy and solid-state molecules have the least kinetic energy. The temperature is the... View Article
