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Write the need of a standard unit. - Science

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प्रश्न

Write the need of a standard unit.

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उत्तर

Many of the ancient systems of measurement were based on the dimensions of human body. As a result, unit of measurement varied from person to person and also from location to location. In earlier time, different unit systems were used by people from different countries.
But, at the end of the Second World War there was a necessity to use worldwide system of measurement. Hence, SI (International System of Units) system of units was developed and recommended by General Conference on Weights and Measures in 1960 for international usage.

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अध्याय 1: Measurement - Exercise [पृष्ठ १२]

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सामाचीर कलवी Science [English] Class 9 TN Board
अध्याय 1 Measurement
Exercise | Q VII. 2. | पृष्ठ १२
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