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प्रश्न
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उत्तर
Number of threads = 20
Distance covered in 20 threads = 10 mm
Pitch of the screw gauge = `10/20` = 0.5 mm
No of divisions on circular scale = 50
`"Least count" = "pitch"/"no. of divisions"`
= 0.01 mm
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संबंधित प्रश्न
Name the part of the vernier callipers which is used to measure the following
Internal diameter of a mug
Draw a neat and labelled diagram of a screw gauge.
Name its main parts and state their functions.
The pitch of a screw gauge is 1 mm and the circular scale has 100 divisions. In measurement of the diameter of a wire, the main scale reads 2 mm and 45th mark on the circular scale coincides with the base line. Find
(i) The least count and
(ii) The diameter of the wire.
Is it possible to increase the degree of accuracy by mathematical manipulations? Support your answer by an example.
State the formula for calculating length if:
The reading of the main scale is known and the number of vernier scale divisions coinciding with the main scale is known.
What do you understand by the term least count of screw?
State the formula for calculating the pitch of screw.
A measuring cylinder is filled with water up to a level of 30 ml. A solid body is immersed in it so that the level of water rises to 37 ml. Now the solid body is tied with a cork and then immersed in water so that the water level rises to 40 ml. Find the volume of the solid body and the cork.
Define the least count of an instrument.
