When a stone is immersed in a bucket completely filled with water, some amount of water spill out of the bucket. The weight of water …

Bragg’s law was first proposed by Sir William Bragg and his son Sir Lawrence Bragg. They studied about the diffraction of X-rays and devised a …

The center of gravity (not to be confused with center of mass) of a body is a point where the weight of the body acts …

The center of mass (not to be confused with center to gravity) of a body is the point which behaves as if all the mass …

The moment of linear momentum of an object is called angular momentum. Angular momentum is represented by L. The angular momentum of an object about …

Radius of gyration is defined as the distance from the axis of rotation to a point where the total mass of the body is supposed …

According to Newton, when sound waves propagate in air, compression and rarefaction are formed. He assumed that the process is very slow and the heat …

Michelsons’s Method is a precise method for measuring the speed of light. An octagonal mirror M1 is mounted on the shaft of a variable speed …

When an object is thrown vertically upwards, it reaches a certain height and comes back to the earth. But when it is given greater initial …

According to law of conservation of energy, Energy of an isolated system is constant. It can neither be created nor be destroyed but it …

Measurement is a process of detecting an unknown physical quantity by using standard quantity. For example: Take a book and use ruler (scale) to find …

The dimension of a physical quantity is defined as the power to which the fundamental quantities are raised to express the physical quantity. The dimension …

Newton studied about motion scientifically and concluded some results which are called Newton’s laws of motion. There are three laws of motion. All three laws …

Linear Momentum Momentum is the motion contained in a body. Quantity of motion possessed by a body depends upon both of its mass and velocity. …

Kinetic Energy The energy possessed by a body due to its motion is called kinetic energy. So from the definition, it is known that kinetic …