Q. In a vernier calipers, $(N + 1)$ divisions of vernier scale coincide with $N$ divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:
A) $100\,N$
B) $10\,(N + 1)$
C) $\frac{1}{10N}$
D) $\frac{1}{100(N+1)}$
Explanation
[Solution by Claude - not from source] $1\,VSD=\frac{N}{N+1}MSD$; vernier constant $=1\,MSD-1\,VSD=\frac{MSD}{N+1}=\frac{0.01\,cm}{N+1}=\frac{1}{100(N+1)}$ cm. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.