Question

what the relative uncertainity of an object of length 2 cm what is the the relative uncertainity is we use the above meter

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%

Answer 2

dont i have to convert cm to mm

Answer 3

for the 2

Answer 4

no i had already worked the precisions in cm

Answer 5

another person told me

if you measure it to be 2cm with any of the above instruments then the measurement will look like this
2cm±precision or 2cm±uncertainty
so report plus or minus your precision as your uncertainty.

Answer 6

yea thatz true

Answer 7

so how do i use what this person said

Answer 8

so 4 meter stick= 2cm± 0.05
vernier = 2cm± 0.005
miocrometer= 2cm± 0.0005
this means that measurements using a micrometer are more precise and accurate

Answer 9

what i had given before was the % precisions using the various instruments.

Answer 10

what is the precision of these instruments