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प्रश्न
What do you understand by the term least count of screw?
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उत्तर
Least distance of the screw is defined as the smallest distance moved by its tip when the screw turns through one division marked on it.
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संबंधित प्रश्न
The wavelength of light is 589 nm. what is its wavelength in Å?
State one use of a screw gauge.
A vernier callipers has its main scale graduated in mm and 10 divisions on its vernier scale are equal in length to 9 mm. When the two jaws are in contact, the zero of the vernier scale is ahead of the zero of the main scale and the 3rd division of the vernier
scale coincides with a main scale division.
Find : (i) The least count and
(ii) The zero error of the vernier callipers.
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?
Fig., below shows the reading obtained while measuring the diameter of a wire with a screw gauge. The screw advances by 1 division on the main scale when circular head is rotated once.
Find:
(i) Pitch of the screw gauge,
(ii) Least count of the screw gauge and
(iii) The diameter of the wire.
What is the need for measuring length with vernier callipers?
What do you understand by the following term as applied to screw gauge?
Negative zero error
In the following figure, the pitch of the screw is 1 mm. Calculate:
(i) the least count of screw gauge and
(ii) the reading represented in the figure.
How will you find the Zero Error of Vernier Caliper? Explain.
