Question

A student measured the diameter of a thick wire using a micrometer screw gauge of least count 0.001 cm. He recorded the readings as:
Observation 1 2. 3 5 6
0.254 0.260 0.256 0.252 0.262 0.258 Observed diameter
Now answer the following questions
What is the true value of diameter of the given wire in cm?
a) 0.256 b)0.257 c)0.267 (d) 0.258
Which of the observation is most accurate?
a) 1 and 2 b) 4 and 5 c) 1 and 4 (d) 2 and 5
Calculatee the mean value of absolute error in experiment.
a)0.003 b)0.002 c)0.300 d)0.302
what is the relative amor percent in his experiment?
a)1.27% b) 1.16% c)2.27% d) 1.17%
How the diameter or wire determined by student be expressed as? (0.257+-0.005)cm b) (0.257+-0.003) cm c)(0.256+-0.005)cm d) (0.256+-0.003) cm​

Answer 1

Answer:

what is this I can not understand