Which of the following cannot be used as a standard unit of measurement?

Metre

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Human foot

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Yard

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Kilometre

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Solution

The correct option is B
Human foot

Standard units of measurement must have a constant measurement throughout. The length of a human foot varies from person to person. It also varies with age for the same person. Due to this, a human foot cannot be used as a standard of measurement.

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Similar questions

Which of the following cannot be used as a standard of measurement?

The length of a foot can be used as a standard unit.

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