Figure 1 shows the configuration of main scale and Vernier scale...

Figure 1 shows the configuration of main scale and Vernier scale before measurement. Fig. 2 shows the configuration corresponding to the measurement of diameter

D

of a tube. The measured value of

D

is:

Figure 1 shows the configuration of main scale and Vernier scale before measurement. Fig. 2 shows the configuration

Options

A0.12 cm
B0.11 cm
C0.13 cm
D0.14 cm

Correct answer

C. 0.13 cm

Step-by-step solution

\begin{aligned} & 10 \mathrm{MSD}=1 \mathrm{ cm} ; 1 \mathrm{MSD}=0.1 \mathrm{ cm} \\ & 7 \mathrm{MSD}=10 \mathrm{VSD} \\ & 1 \mathrm{VSD}=0.07 \mathrm{ cm} \\ & \text{ Reading }=2 \mathrm{MSD}-\mathrm{VSD} \\ & =0.2 \mathrm{ cm}-0.07 \mathrm{ cm}=0.13 \mathrm{ cm} \end{aligned}

Ans. Option (C)

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