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Question

Give the reasons for error in measurement in the following images.

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Solution

Image A: In this image, the zero of the scale is not coinciding with the starting corner of the object. Due to which, we will get an error in the measurement. This type of error is called zero error.
Image B: In this image, the scale is not properly aligned along the length of the object. This will give a higher reading than the actual length.
Image C: In this image, the scale is broken, so there is no zero mark on the scale. The initial readings are also missing, so this scale cannot give correct measurement unless we measure the length from the a different visible reading of the scale and then take difference between initial and final readings.

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