Shear Modulus & Poisson's Ratio question from NEET 2026

Answer: (d)

1. Young's modulus $Y = \frac{FL}{A\,\Delta L}$: A-II.
2. Compressibility $= \frac{1}{B} = -\frac{1}{\Delta P}\left(\frac{\Delta V}{V}\right)$: B-III.
3. Bulk modulus $B = -P\left(\frac{V}{\Delta V}\right)$: C-IV.
4. Poisson's ratio $= \frac{\Delta d/d}{\Delta L/L} = \frac{\Delta d}{\Delta L}\left(\frac{L}{d}\right)$: D-I.
5. So the answer is (d).