Physics - Practical physics Question with Solution | TestHub

Consider the vernier callipers shown below. The instrument has no zero error. If $1 \mathrm{m}.\mathrm{s}.\mathrm{d}=1 \mathrm{mm}$ and $7 \mathrm{m}.\mathrm{s}.\mathrm{d} = 8 \mathrm{v}.\mathrm{s}.\mathrm{d}$, then what is the length (in $\mathrm{mm}$) of the rod shown in the figure? [Given; the $4^{\mathrm{th}} \mathrm{v}.\mathrm{s}.\mathrm{d}$ coincides with $\mathrm{m}.\mathrm{s}.\mathrm{d}$]