Chapter 2.4, Problem 1QQ

Interpretation Introduction

Interpretation:

In a measurement scale, if the smallest markings are tenths of a millimeter, to what position the decimal point has to be marked from the given list.

Concept Introduction:

Whenever a measurement is made, there is always a degree of uncertainty or error.  For example, when an object is measured with a scale having graduations in centimeter, and if the length of the object falls between 5 and 6, the estimated length would be 5.2 cm.  But this value is approximate. This is called the uncertainty error.  If the same scale is graduated in tenths of a centimeter, the measurement made would be with less degree of uncertainty.  Hence if the markings become smaller lesser is the degree of uncertainty.