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https://en.wikipediawiki/Ballistic_galvanometer

http://labs.physics.dur.ac.uk/level1/projects/script/archive/galvanometer.pdf

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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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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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Galvanometer
A galvanometer is an electromechanical instrument for detecting and measuring electric current. The most common use of galvanometers was as analog measuring instruments, called ammeters, used to measure the direct current (flow of electric charge) through an electric circuit. A galvanometer works as an actuator, by producing a rotary deflection (of a pointer), in response to electric current flowing through a coil in a constant magnetic field.
Galvanometers developed from the observation that the needle of a magnetic compass is ....etc

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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 curve is broad?
6) Magnetic meridian?

EXPERIMENT : PLANK S CONSTANT
1) Filter?
2) Stopping vol ....etc

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