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Errors in Measurement

An iron bar i...

Question

An iron bar is not a good standard of measurement because:

A

it corrodes with time

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B

its mass changes with time

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C

its length changes with temperature

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D

Both A and C

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Solution

The correct option is D
Both A and C

An iron bar corrodes with time and its length changes with temperature. So it is not a good standard of measurement.

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