The errors due to sudden changes in experimental conditions are calledĮxplanation:- Errors due to sudden change in experimental conditions are called random errors (as name suggests)ĩ. There are 20 divisions in 4 cm of the main scale. (C) Constant accurate (D) both (a) and (b)Įxplanation:- As error decreases, the measurement gets more and more accurate.ħ. Which of the following units is a derived unit?Įxplanation:- The unit depends on two fundamental units: meter, second.Įxplanation:- Area = Length x Length = Implies the unit of the quantity measured.Ĥ. The length of the table is 3 meter, here 3 is theĮxplanation:- In the measurement of a physical quantity, the numerical part implies the quantity and the alphabetical one Electric current, thermodynamic temperature, Amount of substance, luminous intensity are quantitiesĮxplanation:- These are the basic (fundamental) quantities that define themselvesģ. Explanation:- These are the basic (fundamental) quantities that define themselves.Ģ.
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