Question

Question 3

Fig. shows a measuring scale which is usually supplied with a geometry box. Which of the following distance 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

Answer: (c) 0.2 m

We know, 100 cm = 1 m and hence we can write the given distances in terms of cm.

(a) 0.1 m = 10 cm

(b) 0.15 m = 15 cm

(c) 0.2 m = 20 cm

(d) 0.05 m = 5 cm

The given scale has marking only until 15, which indicates that it is a 15 cm scale. (Scale inside a normal geometric box will be 15 cm). So, 20 cm is bigger than the scale and hence, we have to use the scale twice to measure 0.2 m. So using only once, 0.2 m cannot be measured with the given scale.