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किसी प्रयोग में लम्बाई का मापित मान 1500 सेमी है इसमें सार्थक अंकों की संख्या लिखिये , यदि मापक यंत्र की अल्पतमांक (i ) 1 सेमी है (ii ) 1 मीटर है ।

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(i ) माप = 1500 सेमी अंत : 1 , 5 , 0 , निश्चित तथा अंतिम अनिश्चित है
अंत : सार्थक अंक = चार
( ii ) माप = 1500 सेमी = 15 मीटर ( 1 निश्चित तथा 5 अनिश्चित अंक है ) अंत : सार्थक अंक = दो

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