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प्रश्न
How do you account for positive zero error for calculating the correct diameter of wires?
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उत्तर
If the zero lines, marked on a circular scale, is below the reference line of the main scale, then there is a positive zero error and the correction is negative. In figure 5th, circular scale division is coinciding with the reference line.
∴ Correction = – Coinciding division of C.S. × L.C.
= – 5 × 0.001 cm
= – 0.005 cm
If the observed diameter is 0.557 cm, then:
Corrected diameter
= Observed diameter + Correction
= 0.557 cm – 0.005 cm
= 0.552 cm
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संबंधित प्रश्न
Describe the procedure to measure the diameter of a wire with the help of a screw gauge.
A screw gauge has 50 divisions on its circular scale and its screw moves by 1 mm on turning it by two revolutions. When the flat end of the screw is in contact with the stud, the zero of the circular scale lies below the base line and 4th division of the circular scale is in line with the base line. Find
(i) The pitch,
(ii) The least count and
(iii) The zero error of the screw gauge
Define metre in terms of the wavelength of light.
The final result of the calculation in an experiment is 125,347,200. Express the number in term of significant place when accuracy is between 1 and 1000
Which part of vernier callipers is used to measure the external diameter of a cylinder?
What do you understand by the following term as applied to screw gauge?
Zero error
What is the backlash error?
A vernier caliper using the scale invented by Galileo.
