Question

11. Name the two scales of a vernier callipers and
explain, how it is used to measure a length correct
up to 0.01 cm.
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Answer 1

Explanation:

The main scale is graduated to read up to 1 mm and on vernier scale, the length of 10 divisions is equal to the length of 9 divisions on the main scale. Thus, L.C. = 1 mm /10 = 0.1 mm = 0.01 cm. Hence, a vernier callipers can measure length correct up to 0.01 cm