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प्रश्न
What is meant by the pitch of a screw gauge? The pitch of a screw is 1 mm.
Find the reading of the instrument shown in the following figure.
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उत्तर
When one complete rotation is given to the screw hand, it moves forward or backward by a distance is called the pitch of the screw. It is a distance between two consecutive threads of the screw.
`"Pitch of the screw" = "distance travelled by screw in n rotations"/"n rotations"`
Pitch of the screw = 1 mm
No. of divisions on circular scale = 100
`"Least count" = "pitch"/"no. of divisions"` = 0.01 mm
Main scale reading = 3 mm
Circular scale division coinciding with the main scale = 42
Circular scale reading = 0.01 x 42 = 0.42
Final reading = 3 + 0.42 = 3.42 mm
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संबंधित प्रश्न
When is a vernier Callipers said to be free from zero error?
Explain the terms : Pitch .
How are they determined?
State one use of a screw gauge.
(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.
Figure shows a screw gauge in which circular scale has 100 divisions. Calculate the least count and the diameter of a wire.
Least count of a vernier caliper is ______ cm.
How will you find the Zero Error of Vernier Caliper? Explain.
