Question

One main scale division of a vernier caliper is equal to \( m \) units. If the \( m \) divisions of the main scale coincide with the \( (n + 1)^{\text{th}} \) division of the vernier scale, the least count of the vernier caliper is:

• A. \( \frac{n}{(n+1)} \)
• B. \( \frac{m}{(n+1)} \)
• C. \( \frac{1}{(n+1)} \)
• D. \( \frac{m}{n(n+1)} \)

Hint:

Least count is the smallest measurement a device can accurately measure; it’s crucial for precision in scientific experiments.