Experiment 2| Using Micrometer Screw Gauge| Complete experiment | FSC Physics Practical

Experiment 2:To find area of cross-section of a wire and volume of a small sphere using micrometer screw gauge
Apparatus:
Micrometer screw gauge, small sphere, fine wire, and half-meter rod.

Procedure:
1) Find the pitch and least count of screw gauge.
2) Find the zero error, and determine the sign of zero correction.
3) Place the wire in the gap AB (see the fig.) and turn the screw till the wire is
gently pressed. Note the reading of the linear as well as the circular scale in the
table.
4) Complete the table up to last column. Take the readings from different places of
the wire.
5) Calculate mean diameter of the wire.
6) Repeat the process for the given small sphere.
7) Calculate mean diameter of the sphere.
8) Find the radius and hence area of cross-section of the wire. Also the volume of
the sphere by applying the formula.
Precautions:
1. The screw should not be pressed too hard.
2. The screw should be turned in the same direction.
3. Take two readings at right angles at each point of the wire.
Viva Voce:
Q.1 What is the least count of Screw gauge?
Ans. The shortest distance which can be measured by it.
Q.2 What is the ‘pitch’ of the screw gauge?
Ans. It is the distance between the two successive threads of linear scale.
Q.3 How screw gauge take linear readings from its circular movement?
Ans. The forward (or backward) movement of the screw is directly proportional to linear movement of the head of the screw gauge
Micrometer screw gauge experiment performed at home,
how to take reading of screw gauge
FSC Physics Practical performed,
how to find Area of cross-section of wire using screw gauge online without appratus,
how to find volume of sphere using screw gauge online without appratus,
how to find Wire area measurement,
Screw gauge experiment,
Punjab boards experiments performed ,
Rawalpindi board experiments performed
Multan board experiments performed
Sahiwal board experiments performed
FBISE practical experiments performed
Physics experiments performed
Practical application of screw gauge
Measurement techniques,
Laboratory experiment,
Science practical performed without apparatus
Precision measurement of wire and sphere using screw gauge
Practical skills,
Physics lab,
Experimental procedure,
Lab report,
Scientific method,
Practical examination
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