Discussion :: SI Units
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The bar used for defining the standard metre at the International office of weights and measures at Sevres near Paris, is composed of
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A.
50% platinum and 50% iridium
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B.
60% platinum and 40% iridium
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C.
70% platinum and 30% iridium
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D.
80% platinum and 20% iridium
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E.
90% platinum and 10% iridium
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Answer : Option E
Explanation :
No answer description available for this question.
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