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प्रश्न
What do you understand by the following term as applied to screw gauge?
Positive zero error
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उत्तर
Positive zero error: If the zero of the circular scale is below the reference line of the main scale, then the screw gauge is said to have positive zero error and the correction is negative.
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संबंधित प्रश्न
Define the least count of vernier callipers. How do you determine it?
Describe in steps, how would you use a vernier callipers to measure the length of a small rod?
The pitch of a screw gauge is 0.5 mm and the head scale is divided in 100 parts. What is the least count 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.
State the correction if the negative error is 7 divisions when the least count is 0.01 cm.
State whether the following statement is true or false by writing T/F against it.
The least count of a screw gauge can be lowered by increasing the number of divisions on its thimble.
What is the least count in the case of the following instrument?
Stopwatch
State whether true or false. If false, correct the statement.
With the help of vernier caliper we can have an accuracy of 0.1 mm and with screw gauge we can have an accuracy of 0.01 mm.
