Question

A boy uses of vernier caliper to measure the thickness of essentially measure it to be 1.4 mm if the zero error of vernier caliper is + 0.02 cm what is the correct sequence of tenses

Answer 1

Correct thickness of pencil =   measured thickness of his pencil 1.4 mm – correction
Correct thickness of pencil = 1.4 mm – (+0.02 cm)
Correct thickness of pencil = 1.4 mm – (+0.002 mm)
Correct thickness of pencil = 1.4 mm – 0.002 mm
 Correct thickness of pencil = 1.398