A) 58.59 degree
B) 58.77 degree
C) 58.65 degree
D) 59 degree
Correct Answer: C
Solution :
[c] 30 V.S.D. \[\square \to \] 29 M.S.D. |
1 V.S.D. \[\to \] \[\frac{29}{30}\]M.S.D. |
\[=\frac{29}{30}\times 0.5\] |
least count of vernier = 1 M.S.D. - 1 V.S.D. |
\[={{0.5}^{o}}-\frac{29}{30}\times {{0.5}^{o}}\] |
\[=\frac{{{0.5}^{o}}}{30}\] |
Reading of vernier = M.S. reading + V.S |
reading \[\times \] least count |
\[={{58.5}^{o}}+9\times \frac{{{0.5}^{o}}}{30}\] |
\[=58.65\] |
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