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Units And Measurement

Question

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The length of plank is measured by simple scale and found to be 15.0 cm. What is the accuracy in one part?

Solution

The length of plank = 15.0 cm
Here, accuracy in the measurement of 15.0 cm = 0.1 cm

space space therefore

Accuracy in one part =

fraction numerator 0.1 over denominator 15.0 end fraction equals 1 over 150

Some More Questions From Units and Measurement Chapter

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?

Is one unit sufficient to measure a physical quantity?

Can a physical quantity have two or more units? Give example.

What are fundamental quantities?

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