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Q.

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


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a

0.1 m

b

0.15 m

c

0.2 m

d

0.05 m 

answer is C.

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Detailed Solution

0.2 m cannot be measured with this scale by using it only once.
We know that 1 meter is equal to 100 centimeters. The length of the scale is 15 cm, i.e., 0.15 m. The given scale can only measure the distance to 15 cm, so it cannot measure 20 cm. 0.10 m is nothing but 10 cm. 0.05 m is nothing but 5 cm.
 
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