Question

length is 4.468m. students measured values with different instruments are 4.3m,4.234m and 4.39m. the most precise and accurate measurements are​

Answer 1

Given : Length is 4.468m. students measured values with different instruments are 4.3m,  4.234 m and 4.39 m

To Find : the most precise and accurate measurements are​

Solution

accurate measurement is the measurement closer to true value

Length is 4.468m

=> True value = 4.468 m

Difference of 4.3 m from 4.468m   = 0.168m

Difference of 4.234  m from 4.468m   = 0.234m

Difference of 4.39 m from 4.468m   = 0.078m

Least difference is 0.078m  

Hence 4.39 m is  most accurate measurement

precision is the closeness of the measurements to each other

the most precise measurement is 4.234  m  as it has maximum significant digits

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the most precise and accurate measurements are

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