Consider the following data : `10 MSDs = 1 cm , 10 VSDs = 9 MSDs`, zero of vernier scale is to the right of the zero marking of the main scale with `6 VSDs` coinciding with `MSDs` and the actual reading for length measurement is `4.3 cm with 2 VSDs` coinciding with main scale graduations . Estimate the length.
Text Solution
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In this case , Vernier constant `= ( 1mm)/( 10) = 0.1 mm` Zero error `= 6 xx 0.1 = + 0.6 mm` Correction `= - 0.6 mm` Actual length `= ( 4.3 + 2 xx 0.01) +` Correction ` = 4.32 - 0.06 = 4.26 cm`
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