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प्रश्न
What do you understand by the term zero error?
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उत्तर
A vernier callipers is said to have a zero error when zero of the main scale does not coincide with zero of the vernier scale.
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संबंधित प्रश्न
Define the term 'Vernier constant'.
When a screw gauge with a least count of 0.01 mm is used to measure the diameter of a wire, the reading on the sleeve is found to be 1 mm and the reading on the thimble is found to be 27 divisions.
(i) What is the diameter of the wire in cm?
(ii) If the zero error is +0.005 cm, what is the correct diameter?
Is it possible to increase the degree of accuracy by mathematical manipulations? Support your answer by an example.
A micrometre screw gauge has a negative zero error of 7 divisions. While measuring the diameter of a wire the reading on the main scale is 2 divisions and 79th circular scale division coincides with baseline.
If the number of divisions on the main scale is 10 to a centimetre and circular scale has 100 divisions, calculate
- pitch
- observed diameter
- least count
- corrected diameter.
What do you understand by the following term as applied to micrometre screw gauge?
Sleeve scale
What do you understand by the following term as applied to micrometre screw gauge?
Thimble scale
State whether the following statement is true or false by writing T/F against it.
The ratchet of a screw gauge is used to measure the depth of a beaker.
An instrument that is used to measure the diameter of a cricket ball is ______.
