Question

QUESTION:2
A vernier calipers has the main scale graduated in mm and total number of division on its vernier
Scale are 10. While measuring the length of a small pencil by it, the main scale reads 42 divisions
And seventh division of the vernier scale coincides with a main scale division.
Calculate:-

i )Least count of vernier caliper
ii)Main scale reading
iii)Vernier scale reading
iv) Length of pencil
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Answer 1

Answer:

10 vernier divisions = 9 m.s.d. (ii) On bringing the jaws together, the zero of the vernier scale is ahead of zero of the main scale, the error is positive. 3rd vernier division coincides with a main scale division

Explanation:

other you should measure