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प्रश्न
In a vernier callipers, 19 main scale divisions coincide with 20 vernier scale divisions. If the main scale has 20 divisions in a centimetre, calculate
- pitch
- L.C. of vernier callipers.
उत्तर
Main scale divisions of vernier callipers in one centimetre = 20 Unit
Pitch = `"Unit of main scale"/"Number of divisions in the unit"`
= `1/20` cm
= 0.05 cm
Least count = `"Pitch"/"No. of vernier scale divisions"`
= `0.05/20`
= 0.0025 cm
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संबंधित प्रश्न
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(a) A vernier scale has 20 divisions. It slides over the main scale, whose pitch is 0.5 mm. If the number of divisions on the left hand of the zero of vernier on the main scale is 38 and the 18th vernier scale division coincides with the main scale, calculate the diameter of the sphere, held in the jaws of vernier callipers.
(b) If the vernier has a negative error of 0.04 cm, calculate the corrected radius of the sphere.
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What is the least count in the case of the following instrument?
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What is the least count in the case of the following instrument?
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Define the least count of an instrument.
