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Byju's Answer
Standard VI
Physics
Measuring Length and Zero Error
The zero mark...
Question

The zero mark of a ruler is broken and the length of a box is measured from 2 cm mark of the ruler. The length is found to be 20 cm. What is the actual length of box?


A

20 cm

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B

18 cm

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C

22 cm

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D

None of the above

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Solution

The correct option is B

18 cm


Length of box = (20- 2) cm= 18 cm


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