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What is the importance of a vernier scale?

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प्रश्न

What is the importance of a vernier scale?
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उत्तर

Vernier caliper is an instrument used for measuring small lengths of solid objects where an ordinary scale cannot be applied. We can measure the length accurately up to the order of 10-2 cm, 10-3 cm depending upon the vernier used. Therefore a vernier caliper is important to measure the fraction of the smallest division of a measuring scale which otherwise could not be done by the judgment of the eye.
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अध्याय 1: Measurement - Exercise 5 [पृष्ठ ४७]

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फ्रैंक Physics [English] Class 9 ICSE
अध्याय 1 Measurement
Exercise 5 | Q 12 | पृष्ठ ४७

संबंधित प्रश्न

The wavelength of light is 589 nm. what is its wavelength in Å?


Which of the following measures a small length to high accuracy : metre rule , vernier callipers or screw gauge?


When does a vernier callipers has the negative error?


A micrometre screw gauge has a negative zero error of 8 divisions. While measuring the diameter of a wire the reading on the main scale is 3 divisions and the 24th circular scale division coincides with baseline.
If the number of divisions on the main scale are 20 to a centimetre and circular scale has 50 divisions, calculate

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

How do you account for positive zero error for calculating the correct diameter of wires?


What do you mean by a negative zero error of a screw gauge? How will you calculate it?

Consider the following case where the zero of vernier scale and the zero of the main scale are clearly seen. If L.C. of the vernier calipers is 0.01 cm, write the zero error and zero correction of the following.


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.


The following diagrams (Fig. 5) show the use of a vernier caliper under three different situations. Study the diagrams carefully and note down the vernier readings in each case.

(a) Measuring the diameter of the rod

(b) Measuring Internal diameter of a cavity

(c) Measuring depth of a cavity


The precision of vernier calipers is ______ mm.


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