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प्रश्न
Explain the terms : Least count of a screw gauge.
How are they determined?
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उत्तर
Least count (L.C.) of a screw gauge : The L.C. of a screw gauge is the distance moved by it in rotating the circular scale by one division.
Thus, L.C. = Pitch of the screw gauge/total no. of divisions on its circular scale.
If a screw moves by 1 mm in one rotation and it has 100 divisions on its circular scale, then pitch of screw = 1 mm.
Thus, L.C. = 1 mm / 100 = 0.01 mm = 0.001 cm
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संबंधित प्रश्न
Describe in steps, how would you use a vernier callipers to measure the length of a small rod?
While measuring the length of a rod with a vernier callipers, below shows the position of its scales. What is the length of the rod?
The least count of a vernier callipers is 0.0025 cm and it has an error of + 0.0125 cm. While measuring the length of a cylinder, the reading on the main scale is 7.55 cm, and the 12th vernier scale division coincides with the main scale. Calculate the corrected length.
State the formula for calculating length if:
Number of vernier scale division coinciding with the main scale and number of division of main scale on the left-hand side of zero of vernier scale is known.
What is the least count in the case of the following instrument?
Thermometer
How will you measure the least count of vernier caliper?
A vernier caliper using the scale invented by Galileo.
