User:Student Sonu

            HOTS  QUESTIONS OF HIGHER SECONDARY CLASSES WITH ANSWERS

               PHYSICS
     CHAPTER. 1(Unit and Measurements)

1. What's difference between 'Accuracy' and 'Precision'? Answer- As the word Accuracy suggests that it's a measure of the difference of measured value and true value whereas the word Precision speaks that it's a value of Measurements to what resolution or limit the quantity is measured.Precision depends on least count of the measuring instrument. For example - if the true value of acceleration due to gravity is 9.80m/s2 but in an experiment student said it is 9.90 then it is more accurate then 9.80.Talking about Accuracy if someone says it is 9.89 thenit is more precised value compares to all other value with least count of instrument 0.01m and it is less accurate. More later