DAVISSON AND GERMER S EXPERIMENTS



In the year 1927 Davisson and Germer working in the Bell telephone laboratories of USA ,accidentally stumbled upon an experiment in which they observed diffraction of electrons in a crystal of nickel the way X-ray diffraction occurs in a crystal. When they calculated the wavelength that should be attributed to the incident beam on the basis of Bragg s law, the value matched exactly with the value of the wavelength evaluated by using de-broglie equatio ....etc

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algebra r kumar book pdf download full book

Algebra is one of the broad parts of mathematics, together with number theory, geometry and analysis. In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols;it is a unifying thread of almost all of mathematics. As such, it includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields. The more basic parts of algebra are called elementary algebra, the more abstract parts are called abstra ....etc

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hall effect experiment viva questions pdf

MOST EXPECTED PHYSICS VIVA QUESTIONS FOR PHYSICS PRACTICAL
MOST EXPECTED PHYSICS VIVA QUESTIONS FOR PHYSICS PRACTICAL

EXPERIMENT : FOUR PROBE
1) Energy band gap?
2) Relation of resistivity and T?
(In case of metal and semi-conductor with reason)
3) Depletion layer?
4) N- and p- type semi-conductors example?

EXPERIMENT : I-H CURVE
1) Retentivity and its plot on I-H curve?
2) Solenoid?
3) What does I-H curve area imply?
4) Examples of para-, di- and ferromagnetic materials?
5) What if I-H ....etc

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To get full information or details of rc circuit experiment viva questions and answers in btech 1st year physics lab please have a look on the pages

http://citchennai.eduwp-content/uploads/2014/01/Circuits.pdf

http://cg.nicbilaspur/ggpbsp3/Download%20Content/Download%20LAB%20MANUALS%20VIVA/Electronics%20&%20Telecommunication%20Deptt/Electrical%20&%20Electronic%20Measurement%20lab/Network%20Analysis%20viva.pdf

if you again feel trouble on rc circuit experiment viva questions and answers in btech 1st year physics lab please reply in that pag ....etc

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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 laser radiation?
Laser radiations have high intensity, high coherence, ....etc

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Solar Cells - Test Questions

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Question 71
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Question 71Back to Top
Question: List the uses of solar cells.

Answer: A Solar cells or solar cell panels are used in:
1) Artificial satellites and in space probes like Mars orbiters
2) Wireless transmission systems or TV relay stations in remote locations
3) Traffic signals, calculators and in toys

Question 72Ba ....etc

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viva question answer of flywheel experiment pdf

Aim:

To determine the moment of inertia of a flywheel.

Apparatus:

Fly wheel, weight hanger, slotted weights, stop watch, metre scale.

Theory:

The flywheel consists of a heavy circular disc/massive wheel fitted with a strong axle projecting on either side.The axle is mounted on ball bearings on two fixed supports. There is a small peg on the axle. One end of a cord is loosely looped around the peg and its other end carries the weight-hanger.

Let m be the mass of the weight hanger a ....etc

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Abstract Radio Frequency Identification (RFID) has been developed as an important technique for many high security and high integrity settings. In this paper, we study survivability issues for RFID. We first present an RFID survivability experiment to define a foundation to measure the degree of survivability of an RFID system under varying attacks. Then we model a series of malicious scenarios using stochastic process algebras and study the different effects of those attacks on the ability of the RFID system to provide critical services even ....etc

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Plzz anybody give me the observation readings of LCR circuit.
1. Variation of various voltages.
2. Variation of voltages across with frequency for different R. ....etc

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Biasing a diode means applying appropriate DC voltage to a diode. A forward biased diode conducts
easily whereas reverse biased diode practically conducts no current. It means that forward resistance of a
diode is quite small as compared with its reverse resistance.
Forward current is the current flowing through a forward biased diode. Every diode has a maximum
value of forward current, which it can safely carry. If this value is exceeded, the diode may be destroyed
due to excessive heat. Reverse current or leakage current is the current t ....etc

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