Physics Lab Viva Voce Questions and its answers Laser Parameters



1. What is semi conductor diode laser?
Semiconductor diode laser is a specially fabricated pn junction diode. It emits laser light when it is
forward biased.

2. What is LASER?
The term LASER stands for Light Amplification by Stimulated Emission of Radiation. It is a device
which produces a powerful, monochromatic collimated beam of light in which the waves are coherent.

3. What are the characteristic of ....etc

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1. What is semi conductor diode laser?

Semiconductor diode laser is a specially fabricated pn junction diode. It emits laser light when it is
forward biased.

2. What is LASER?

The term LASER stands for Light Amplification by Stimulated Emission of Radiation. It is a device
which produces a powerful, monochromatic collimated beam of light in which the waves are coherent.

3. What are the characteristic of laser radiation?

Laser radiations have high intensity, high coherence, high monochoromation and high directionality
with less divergence.
....etc

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C viva questions

1. Who developed the C language?
2.How do you comment on program C?
3. How is the name C derived?
4. What is K & R C?
5. What is the preprocessor declaration?
6. Differentiate between constant and variable.
7.What is the type of data?
8. Name the basic data types of C.
9.Differentiate between string constant and character constant.
10. What is the integer, char, float range for a 16-bit computer?
11. What is a statement?
12. What is a keyword?
13.Difference between keywords and identifiers.
14. What is th ....etc

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physics practical viva questions for bsc

Q.1: Define surface tension?
Ans. The tangential cohesive force acting along the unit length of the surface of a liquid
T = F / L
Where F = total force along a line
L = length of the line
In this experiment:
F = m g = weight of the pan + weight in the pan.
L = 2 (length of the slide) + 2 (breadth of the slide).
Sometime we neglect the breadth since it is very small.

Q.2: What are units of surface tension in C.G.S. and S.I. (M.K.S.) system?
Ans. Dynes / cm (C.G.S.)
Newton / meter (M.K.S.)

Q.3: What ....etc

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1. Under which category Magnetic, electrostatic and gravitational forces come? Non-contact forces
2. No matter how far you stand from a mirror, your image appears erect, How is the mirror likely to be? Either plane or convex
3. Due to which Phenomenon are advanced sunrise and delayed sunset found in the sky? Refraction of sunlight
4. Due to which Phenomenon is the formation of colours in soap bubbles? Interference of light
5. On which principle a pressure cooker works? Elevation of boiling point of water by application of pressure
6. ....etc

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ABOUT THE BOOK:
This book is designed to meet the course on Engineering Physics Practical of engineering curriculum for the First Year engineering students.
Laboratory work is an important part of the process of learning physics where students apply their knowledge practically.
As no textbook available on the market on Engineering Physics dealt with the experimental part in detail and so in the classroom lecture, the authors
bring out this book. The authors present this book in a very lucid style such that even a below average student ca ....etc

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To get full information or details of engineering 1st year it workshop viva voce questions download pdf please have a look on the pages

http://engineeringinterviewquestionsworkshop-technology-lab-viva-questions-and-answers/

if you again feel trouble on engineering 1st year it workshop viva voce questions download pdf please reply in that page and ask specific fields in engineering 1st year it workshop viva voce questions download pdf ....etc

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Examiner (E): What was the experiment allotted to you?

Students(S): Sir, I was assigned the experiment to determine the internal resistance of a primary cell using potentiometer.
E: OK, Tell me the principle of a potentiometer

S: Sir. The principle of a potentiometer is that the potential drop across any length of a wire of uniform cross section and composition and carrying a constant current is directly proportional to the length.
E: Good. What is internal resistance?

S: The resistance offered by the electrodes and electrolyte of a ....etc

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plz send me Comprehensive Viva-Voce Questions for vlsi subject plz ....etc

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In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The emerging coloration is a form of structural coloration. The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element. Because of this, gratings are commonly used in monochromators and spectrometers.

For practical applications, gratings generally have ridges or rulings on their sur ....etc

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