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प्रश्न
State the formula for determining least count for a vernier callipers.
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उत्तर
Least count (L.C.) = `"Pitch"/"No. of vernier scale division"`
For example: If the pitch is 0.1 cm and there are ten vernier scale divisions.
Then L.C. = `0.1/10` = 0.01 cm
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संबंधित प्रश्न
Name the part of the vernier callipers which is used to measure the following
Depth of a small bottle
Explain the terms : Pitch .
How are they determined?
The least count of a vernier calipers is :
(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.
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.
