## Viva Questions Newton’s Rings Experiments B.Sc. Physics

Newton’s Rings Experiment The key idea behind the Newton’s Rings experiment is the thin film formation between plane convex lens and glass plate. Due to this thin film of air a path difference occurs in the waves which reflects from Read more

## Semiconductor LASER Construction and Working

Introduction to Semiconductor LASER In this video tutorial of semiconductor LASER the following points which given below are explained. The GaAs is responsible for the optical properties when electron and holes recombines in depletion region. As you know in Si/Ge Read more

## Viva Questions Experiments Attenuation in Optical Fibers

Attenuation losses in Optical Fibers Optical fiber is made of either glass or plastic material. The refractive index of the material plays an important role in the transmission of optical signal used further in communications. This signal travel inside the Read more

## Viva Questions Stewart and Gee’s Method Experiment|apniPhysics

Stewart and Gee’s Method Determination of Magnetic Field along the Axis of a Current Carrying Circular Coil 1Q. What is the magnetic induction formula at a point x, away from the center of the circular coil? 2Q. What will be the Read more

## Viva Questions Melde’s Experiment|apniPhysics

Aim To determine the frequency of the vibrator using Melde’s Experiment Viva Questions 1Q. What do you mean by progressive waves? 2Q. Are longitudinal and Transverse waves are progressive waves? 3Q. How Stationary wave forms? 4Q. What are nodes and Read more

## Science Vs Virtual Labs Vs Projects in Schools and Students Motivation

Science Experiments in School A proper structure of the course taught to be children in schools helps to create a new dimension of thinking. Science experiments and virtual labs along with animation and simulations are main sources we have. The physical Read more

## Semiconductor p and n Junction Diode Aimation

Semiconductor Junction Diode Working In this video lecture a p-n junction formation and working is explained by using the animation and other scientific tools. As you know that p-n junction is the basic building block of all semiconductor devices. So Read more

## Viva Questions pn Junction diode Characteristics

P-N Junction Diode To draw the characteristics means behavior of current in forward and reverse bias of a semiconductor junction diode. This semiconductor diode either made by silicon or germanium which have atomic number Z=14 or Z=32 respectively. There are Read more

## e by m Thomson Method Experiment Full Details apniPhysics

Charge to Mass Ratio e/m by Thomson method In this experiment we determine the specific charge value e/m by Thomson method. Cathode ray tube is the main component of this experiment. As you know cathode ray tube have three components Read more

## Viva Questions J J Thomson experiment charge to mass ratio of the electron

Viva Questions charge to mass ratio of the electron experiment 1Q. What Is Cathode Ray Tube (CRT)? 2Q. What is electron gun in CRT? 3Q. Why do we use filament in CRT? 4Q. How electrons emits from the cathode? 5Q. How do Read more

## Cathode Ray Tube Construction and Working

The Cathode Ray Tube (CRT) have three main components, the first one is electron gun, second deflecting plates and the third one luminescent screen. The CRT principle used in cathode ray oscilloscope (CRO) and Tube based old TVs. Construction of Read more

## How to find Ionization potential of Mercury in Physics Lab

Ionization Potential of Mercury Ionization potential of mercury is discussed with experimental apparatus. How to find out the ionization potential of mercury. The electrons from the heated surface of cathode emits and reach upto the plate which is at higher Read more