Introduction to Physics

The velocity of a particle is defined as the rate of change of displacement of the particle. It is also defined as the speed of…

The motion along a straight line is known as rectilinear motion. The important parameters required to study the motion along a straight line are the…

Motion is the change of position of an object with respect to time. To study the motion of the object. one has to study the…

An equation is dimensionally correct if the dimensions of the various terms on either side of the equation are the same. This is called the…

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

It is very common that repeated measurements of a quantity give values which are slightly different from each other. These errors have no set pattern…

The uncertainty in the measurement of a physical quantity is called error. It is the difference between the true value and the measured value of…

For measuring large distances such as the distance of moon or a planet from the Earth, special methods are adopted. Radio-echo method, laser pulse method…

It is easier to express larger and smaller units of the same physical quantity. In the metric (SI) system these are related to the fundamental…

Mass is the quantity of matter contained in a body. It is independent of temperature and pressure. It does not vary from place to place.…