Rajesh measures the length of a box to be $30 c m$ using a scale that has a broken left end. The actual length of the box is $29 c m$ . What is the zero error?

30 c m

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1 c m

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29 c m

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59 c m

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Solution

The correct option is B $1 c m$
Zero error is the error that occurs when the length of an object is measured using a scale that has a damaged zero mark or broken left end.

Given,
Actual value = $29 c m$ ,
Measured value = $30 c m$ .

Zero error = Measured value - actual value
Zero error = $30 c m - 29 c m = 1 c m$

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Rajesh measures the length of a box to be 30 cm using a scale that has a broken left end. The actual length of the box is 29 cm. What is the zero error?

The correct option is B 1 cmZero error is the error that occurs when the length of an object is measured using a scale that has a damaged zero mark or broken left end. Given, Actual value = 29 cm, Measured value = 30 cm. Zero error = Measured value - actual value Zero error = 30 cm−29 cm=1 cm

Rajesh measures the length of a box to be $30 c m$ using a scale that has a broken left end. The actual length of the box is $29 c m$ . What is the zero error?