NEET UG 2025 · Physics · Question 25
NEET 2025 Physics, question 25
Question 25 of the NEET 2025 paper (code 45) is a Physics question from Units and Measurements. Its idea, Vernier Caliper Reading and Zero Error, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q25 · Physics
Consider the diameter of a spherical object being measured with the help of a Vernier callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least division in the M.S. is 0.1 cm and the zero of V.S. is at = 0.1 cm when the jaws of Vernier callipers are closed.
If the main scale reading for the diameter is M = 5 cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is
- 15.18 cm
- 25.08 cm
- 34.98 cmOfficial answer
- 45.00 cm
Official answer: option 3 · NTA final answer key
Same idea
The only question on Vernier Caliper Reading and Zero Error
No other NEET paper from 2017–2026 tested this exact idea.
Vernier Caliper Reading and Zero Error: every question and how it was framed
The chapter
Units and Measurements in ten years of NEET
20 questions from 2017–2026, asked in 10 of 10 papers, about 1.9 a paper. Units and Dimensions alone had 20.