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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:

Options

  1. A0.12 cm
  2. B0.11 cm
  3. C0.13 cm
  4. D0.14 cm

Correct answer

C. 0.13 cm

Step-by-step solution

aligned & 10 MSD =1 ~cm ; 1 MSD =0.1 ~cm & 7 MSD =10 VSD & 1 VSD =0.07 ~cm & Reading =2 MSD - VSD & =0.2 ~cm -0.07 ~cm =0.13 ~cm aligned Ans. Option (C)

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