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Define the term 'Vernier constant'.
Draw a neat and labelled diagram of a vernier callipers. Name its main parts and state their functions.
Name the part of the vernier callipers which is used to measure the following
Internal diameter of a mug
Which of the following measures a small length to high accuracy : metre rule , vernier callipers or screw gauge?
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 pendulum completes 2 oscillations in 5 s. What is its time period? If g = 9.8 m s-2, find its length.
In figure for vernier callipers, calculate the length recorded.

Who invented vernier callipers?
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.

How will you find the Zero Error of Vernier Caliper? Explain.
