Question
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:
JEE Advanced
Physics
Experimental Physics
2025
JEE Advanced 2025 (Paper 1)
JEE Advanced Physics Question (2025) — Solution
Options
- A. 0.12 cm
- B. 0.11 cm
- C. 0.13 cm
- D. 0.14 cm
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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