Q 11-01-105JEE MainJEE Main 2024 (27 Jan, Shift 1)Easy
Identify the physical quantity that cannot be measured using spherometer:
Answer: (B) Specific rotation of liquids
A spherometer measures small heights (sagitta) precisely, so it gives the thickness of thin plates and the radius of curvature of convex and concave surfaces.
Specific rotation of a liquid is an optical property measured with a polarimeter, not a spherometer.
Solution by Sreeraj P, M.Sc Physics