Units of Measurement Physics is about the study of forces and energy. In order to test and measure physical quantities we need to define some standard measures. It explains the law of nature in a special way. This includes a quantitative description, comparison and measurement of certain physical quantities. To measure and compare a physical Read more about Units of Measurement[…]
Work Done When force is exerted on an object and object is displaced, work is said to be done. When we apply some force on a block then the body moves with some acceleration or speed increases or decreases depending on the direction of the force applied. As the speed increases or decreases, the kinetic Read more about Work Done[…]
Lens Maker’s Formula Lens is a transparent medium bounded by two surfaces, at least one of them must be curved. A relation between the focal length of a lens, radii of curvature of two surfaces and the refractive index of the material is called lens maker’s formula. Lens Maker’s Formula: Consider the thin lens shown here Read more about Lens Maker’s Formula[…]
Free Fall A free-falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. Visualizing motion during Free Fall: When we drop a Rock, let’s say from top floor of Read more about Free Fall[…]
Angular Acceleration Angular Acceleration is the rate change of angular velocity of a body is called angular acceleration. It is the change in velocity of moving object in respect to time. The angular acceleration is also known as rotational acceleration. It is an expression of the change in angular velocity per unit time. The acceleration Read more about Angular Acceleration[…]
Drift Velocity In absence of Electric field, electrons in a conductor will be moving due to thermal motion during which they collide with the fixed ions. An electron colliding with an Ion emerges with the same speed as before the collision. However, the direction of its velocity after the collision is completely random. What is Read more about Drift Velocity[…]
Properties of Fluids Fluids are the substances which begin to flow when an external force is applied to them. The liquids and gases together termed as fluids, in other words, we can say that the substances which can flow are termed as fluids. The mechanical properties of fluids can be categorized into two branches i.e. Read more about Properties of Fluids[…]
Motion and Rest Motion and Rest are relative terms, no one can exist in a state of absolute rest or absolute motion. A body may seem to be at rest with respect to one object but may appear to be in motion with respect to another object. If you consider a passenger in a moving Read more about Motion and Rest[…]
Velocity What is Velocity? Velocity is the Rate of change of position. I.e. Rate of displacement with time is called velocity. A velocity of an object is the rate of change of the object’s position with respect to a frame of reference and time, it might sound complicated but velocity is basically speed in a Read more about Velocity[…]
Photodiode A Photodiode is a p – n junction diode that can absorb photons and generate either a Photo Voltage or Free Carriers that can produce Photocurrent. They are used for detection of Optical signals and for conversion of Optical Power to Electrical Power. A Photodiode is an example of an optoelectronic junction device, which Read more about Photodiode[…]