Question

what is the precision for a meter stick, vernier cailper, and micrometer caliper . what the relative uncertainity of an object of length 2 cm what is the the relative uncertainity is we use the above instruments

Answer 1

meter stick = o.1cm
vernier = 0.01 cm
micrometer = 0.001cm
relative uncertainity for 2cm will be
for meter stick = (0.1/2 )*100% = 5%
vernier = (0.01/2)*100% = 0.5%
micrometer = (0.001/ 2)*100% = 0.05%