1.

a boy uses a vernier calipers to measure the thickness of his pencil. he measures it to be 1.4 mm . If the Zero error of vernier calipers is + 0.02 cm, what is the correct thickness of pencil?

Answer»

The CORRECT THICKNESS of the PENCIL MAY br
1. 1.42
and the other possibility is
2. 1.38
since
d=1.4+_0.02



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