A) \[2.71\,mm\]
B) \[2.67\,mm\]
C) \[2.63\,mm\]
D) \[2.65\,mm\]
Correct Answer: C
Solution :
Given, \[P=1mm,\,N=100\] \[\Rightarrow \] Least count, \[C=\frac{P}{N}=\frac{1mm}{100}=0.01mm\] The instrument has a positive zero error i.e., \[e=+NC=+4\times 0.01=+0.04mm\] Main scale reading is \[2\times (1mm)=2mm\] Circular scale reading is \[67(0.01)=0.67mm\] observed reading is \[{{R}_{0}}=2+0.67=2.67mm\] So, true reading \[={{R}_{0}}-e=2.62mm\]You need to login to perform this action.
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