Question

6
Which of the following is the most precise device for measuring length? (a) a Vernier callipers w
20 divisions on the sliding scale, coinciding with 19 main scale divisions (b) a screw gauge ol pitch
1 mm and 100 divisions on the circular scale (c) an optical instrument that can measure lengo
within a wave length of light.​

Answer 1

Answer:

a) a Vernier callipers w is Your Answer