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…

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…

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…

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

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…