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Question

Which of the following lengths can be measured by the scale given below?


A
Cannot be used to measure any length
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B
2 cm
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C
Both 2 cm and 12 cm
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D
12 cm
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Solution

The correct option is C Both 2 cm and 12 cm

From the figure, if the scale was not broken, the maximum length we could have measured from the scale at one go was 15 cm.

Although we cannot see the reading "2" on the scale, we can measure it with the help of markings on the right hand side of the broken part using the undergiven formula.

Length = Final Reading - Initial Reading

Irrespective of the broken part in the middle, since both the markings "0" and "12" are clearly visible on the scale, we can measure that length.

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