हिंदी

Which of the following measures a small length to a high accuracy: metre scale, vernier calipers, screw gauge?

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प्रश्न

Which of the following measures a small length to a high accuracy: metre scale, vernier calipers, screw gauge?
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उत्तर

Screw gauge measures a small length to a high accuracy because it has the lowest least count among the given three instruments. And low least count means high accuracy
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अध्याय 1: Measurements and Experimentation - Exercise 2 [पृष्ठ २९]

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फ्रैंक Physics Part 1 [English] Class 9 ICSE
अध्याय 1 Measurements and Experimentation
Exercise 2 | Q 14 | पृष्ठ २९

संबंधित प्रश्न

Explain the terms : Pitch .
How are they determined?


A screw has a pitch equal to 0.5 mm. What should be the number of divisions on its head so as to read correctly up to 0.001 mm with its help?


How can the least count of a screw gauge be decreased?


The final result of the calculation in an experiment is 125,347,200. Express the number in term of significant place when accuracy is between 1 and 1000


The least count of a vernier callipers is 0.01 cm and it has an error of + 0.07 cm. While measuring the radius of a sphere, the main scale reading is 2.90 cm and the 5th vernier scale division coincides with the main scale. Calculate the correct radius.


A micrometre screw gauge has a negative zero error of 7 divisions. While measuring the diameter of a wire the reading on the main scale is 2 divisions and 79th circular scale division coincides with baseline.
If the number of divisions on the main scale is 10 to a centimetre and circular scale has 100 divisions, calculate

  1. pitch
  2. observed diameter
  3. least count
  4. corrected diameter.

Name the measuring employed to measure the diameter of a pencil.


What is the least count in the case of the following instrument?

Screw gauge


What is meant by zero error of a vernier caliper? How is it determined? Draw neat diagrams to explain it. How is it taken into account to get the correct measurement?

How will you record your observations while measuring the volume of an irregular solid by the displacement method using a cylinder?

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