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प्रश्न
Up to how many decimal places can a common vernier callipers measure the length in cm?
उत्तर
A common vernier calliper can measure the length accurately up to two places of decimal when the length is measured in centimetre
i.e. up to 1/100 the part of a centimetre.
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संबंधित प्रश्न
When is a vernier Callipers said to be free from zero error?
A boy uses a vernier callipers to measure the thickness of his pencil. He measures it to be 1.4 mm. If the zero error of vernier callipers is +0.02 cm, what is the correct thickness of the pencil?
Is it possible to increase the degree of accuracy by mathematical manipulations? Support your answer by an example.
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 10
(a) A vernier scale has 10 divisions. It slides over the main scale, whose pitch is 1.0 mm. If the number of divisions on the left hand of zero of the vernier scale on the main scale is 56 and the 8th vernier scale division coincides with the main scale, calculate the length in centimetres.
(b) If the above instrument has a negative error of 0.07 cm, calculate the corrected length.
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 is the least count in the case of the following instrument?
Metre scale
The following figure shows the reading of a vernier caliper used for measuring the thickness of a metal sheet.
(i) Find the least count of the instrument.
(ii) Calculate the thickness of the metal sheet.
An instrument that is used to measure the diameter of a cricket ball is ______.
