Identify the physical quantity that cannot be measured using spherometer: (a) Radius of curvature of concave surface (b) Specific rotation of liquids (c) Thickness of thin plates (d) Radius of curvature of convex surface

Answer: (b). A spherometer measures small thicknesses and radius of curvature of convex or concave surfaces. Specific rotation of a liquid is measured with a polarimeter, not a spherometer. So the answer is (b).

Identify the physical quantity that cannot be measured using… | JEE Main 2024 (27 Jan, Shift 1)

Q16JEE Main 2024 · 27 JAN · SHIFT 1Easy

Least Count, Vernier Callipers & Screw Gauge

Identify the physical quantity that cannot be measured using spherometer:

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Answer: (b)

A spherometer measures small thicknesses and radius of curvature of convex or concave surfaces.
Specific rotation of a liquid is measured with a polarimeter, not a spherometer.
So the answer is (b).

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