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18.The observed reading of the length ofa rod measured by a vernier callipers comes out to be 5.4 mm. If thevernier had been error free and xth MSD would have been coincided with yth VSD, then find(r-y). [1 MSD = 1 mm and 10 VSD coincides with 9 MSD](A) 4(B) 5(C) 7(D) 0

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open B is correct answer



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