CBSE Class 10 Science 2016 Term 1 Paper

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Question : 35
Total: 36
Find the least count of a milliammeter in which there are 20 divisions between 400 mA and 500‌mA marks.
Solution:  
‌ Least count ‌‌=‌
‌ Range ‌
‌ No. of division ‌

‌=‌
500−400
20
=‌
100
20
=5‌mA
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