NEET Mechanical Properties of Solids PYQ practice sheet

6 previous-year NEET Physics questions from Mechanical Properties of Solids, newest papers first. Mechanical Properties of Solids carries 6 of the Physics questions in NEET 2020 to 2026, so this is a good place to test yourself after revising the chapter. Marking: +4 correct, −1 wrong.

1. 1.

   NEET 2026

   Match List I with List II: List I: A. Young's modulus, B. Compressibility, C. Bulk modulus, D. Poisson's ratio List II: I. $\dfrac{\Delta d}{d}\Big/\dfrac{\Delta L}{L}$ (written as $\dfrac{\Delta d}{\Delta L}\dfrac{L}{d}$), II. $\dfrac{FL}{A(\Delta L)}$, III. $-\dfrac{1}{\Delta P}\left(\dfrac{\Delta V}{V}\right)$, IV. $-P\left(\dfrac{V}{\Delta V}\right)$ Choose the correct answer from the options given below:

   • (A)
     A-IV, B-I, C-II, D-III
   • (B)
     A-III, B-II, C-I, D-IV
   • (C)
     A-II, B-III, C-IV, D-I
   • (D)
     A-I, B-IV, C-III, D-II
2. 2.

   NEET 2024

   The maximum elongation of a steel wire of 1 m length if the elastic limit of steel and its Young's modulus, respectively, are $8\times10^{8}\ \text{N m}^{-2}$ and $2\times10^{11}\ \text{N m}^{-2}$, is:

   • (A)
     8 mm
   • (B)
     0.4 mm
   • (C)
     4 mm
   • (D)
     40 mm
3. 3.

   NEET 2024

   A metallic bar of Young's modulus $0.5\times10^{11}\ \text{N m}^{-2}$ and coefficient of linear thermal expansion $10^{-5}\ {}^\circ\text{C}^{-1}$, length 1 m and area of cross-section $10^{-3}\ \text{m}^2$ is heated from $0^\circ$C to $100^\circ$C without expansion or bending. The compressive force developed in it is:

   • (A)
     $50\times10^{3}$ N
   • (B)
     $2\times10^{3}$ N
   • (C)
     $100\times10^{3}$ N
   • (D)
     $52\times10^{3}$ N
4. 4.

   NEET 2023

   Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $W$ attached at its free end. The longitudinal stress at any point of cross-sectional area $A$ of the wire is :

   • (A)
     Zero
   • (B)
     $2W/A$
   • (C)
     $W/A$
   • (D)
     $W/2A$
5. 5.

   NEET 2022

   Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The stretching of a spring is determined by the shear modulus of the material of the spring. Reason (R): A coil spring of copper has more tensile strength than a steel spring of same dimensions. In the light of the above statements, choose the most appropriate answer from the options given below:

   • (A)
     (A) is false but (R) is true
   • (B)
     Both (A) and (R) are true and (R) is the correct explanation of (A)
   • (C)
     Both (A) and (R) are true but (R) is not the correct explanation of (A)
   • (D)
     (A) is true but (R) is false
6. 6.

   NEET 2020

   A wire of length $L$, area of cross section $A$ is hanging from a fixed support. The length of the wire changes to $L_1$ when mass $M$ is suspended from its free end. The expression for Young's modulus is :

   • (A)
     $\frac{MgL_1}{AL}$
   • (B)
     $\frac{Mg(L_1-L)}{AL}$
   • (C)
     $\frac{MgL}{AL_1}$
   • (D)
     $\frac{MgL}{A(L_1-L)}$