Question

Fig. shows a measuring scale which is usually supplied with a geometry box. Which of the following distances cannot be measured with this scale by using it only once?

A. $0.1\,m$
B. $0.15\,m$
C. $0.2\,m$
D. $0.05\,m$

Answer 1

Hint: In this question, a measuring scale is given and we have to find out which of the following options can be measured. A ruler is a device or tool that is used to measure the distance of a straight line in geometry and technical drawing, as well as engineering and construction technologies. In both metric and customary units, a math ruler is used to measure the length.

Complete answer:
Measuring Instruments:This instrument has a ruler-like function and can be folded or retracted into a coil, similar to a metal tape measure. They are as straight as a ruler when extended for use. Take a carpenter's ruler, for example, which is 2 m long but only 25 cm long when folded, allowing it to fit easily into the pocket.

Scales of measurement in physics as well as maths are used to classify and or quantify variables based on certain properties.In this above figure we can say that the given scale is $0.15\,m$ long so we easily can say that $0.2\,m$ cannot be measured with this scale.

So, the correct option is C.

Note: A ruler without any marks on it could only be used to draw a straight line between two points in geometry. Because of its straight edge, it is also used to draw graphs and tables. It's used in the construction of rulers and compasses, where an unmarked ruler and compass can be used. Using an unmarked ruler and compass, it can also be used to bisect the angle.