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?
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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
1. 1.42
and the other possibility is
2. 1.38
since
d=1.4+_0.02
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