Questions
Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as :
a
2.125 cm
b
2.124 cm
c
2.121 cm
d
2.123 cm
detailed solution
Correct option is B
Least count,LC=pitchno of division=0.1cm50=0.002cmReading should be multiple of Least count.Talk to our academic expert!
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Which of the following is the most precise device for measuring length?
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