A torsional pendulum, or torsional oscillator, consists of a disk-like mass suspended from a thin rod or wire. When the mass is twisted about the axis of the wire, the wire exerts a torque on the mass, tending to rotate it back to its original position.

1. Introduction
A torsional pendulum, or torsional oscillator, consists of a disk-like mass
suspended from a thin rod or wire. When the mass is twisted about the axis
of the wire, the wire exerts a torque on the mass, tending to rotate it back
to its original position. If twisted and rele ....etc

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Nowadays the demand for oscilloscopes are increasing. PC based
oscilloscope is used to view the waveforms of various types of electrical signals.
This circuit conditions different signals of frequency below 1 kHz and displays
their waveforms on the computers screen. The circuit is used to the input
waveform and convert it to the digital format for interfacing to the PC. The
software for acquiring the data into the PC and displaying the same on its screen is
written in Visual basic.
The input waveform is first applied to a rectifier compr ....etc

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Physics Lab Viva Voce

(1) Torsional Pendulum :
(1) Define Rigidity of modulus ?
Ans : When tangential surface forces are applied on a body , the successive layers of the material are moved or sheared.This type of strain is called shearing strain. The ratio of tangential stress to shearing strain is called Rigidity of modulus
Rigidity of modulus= Tangential stress / shearing strain.
Tangential stress = Force/Area.
Shearing strain=
(2) Define Moment Of Inertia ?
Ans : It is the measure of the inertia of a body in rot ....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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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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What is the effect of temperature on on p-n junction diode????? ....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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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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I can't get my sonometer readings ..pls give me a readings pls pls help me ....etc

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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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