Question

In a vernier calipers , there are 10 divisions on the vernier scales and 1 cm on the main scale is divided in 10equal parts . While measuring a length , the zero of the vernier lies ahead of 1.8cm and 4th division of vernier coincides with a main scale division . Find the length . If zero -error of vernier calipers is -0.02 cm,what is the correct length ?

Answer 1

Explanation:

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