Mechanical Properties of Solids: JEE Main Physics Previous Year Questions

156 previous year questions from Mechanical Properties of Solids. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. 1.Young's modulus of a perfect rigid body is
2. 2.A wire of length $L$ and radius $r$ is clamped at one end. If its other end is pulled by a force $F$, its length increases by $l$. If the radius of the wire and the a…
3. 3.In a photoelectric experiment, increasing the intensity of incident light:
4. 4.An electron having de-Broglie wavelength $\lambda$ is incident on a target in a X-ray tube. Cut-off wavelength of emitted X-ray is:
5. 5.A solid copper cube of $7\text{cm}$ edge is subjected to a hydraulic pressure of $8000\text{kPa}$. The volume contraction of the copper cube is (Bulk modulus of…
6. 6.The de-Broglie wavelength of a particle having kinetic energy E is $\lambda$. How much extra energy must be given to this particle so that the de-Broglie wavelength reduces to…
7. 7.With rise in temperature, the Young's modulus of elasticity
8. 8.A wire of length $40\text{cm}$ is stretched by $0.1\text{cm}$. The strain on the wire is
9. 9.The approximate depth of an ocean is 2700 m. The compressibility of water is 45.4 x $10^{–11}$ $P{a}^{–1}$ and density of water is $10^3$ kg/$m^3$. What fractional comp…
10. 10.Two wires A and B are made of same material having ratio of lengths $\frac{L_A}{L_B}=\frac{1}{3}$ and their diameters ratio $\frac{d_A}{d_B}=2$. If both…
11. 11.Two wires of same length having radius of $2\text{mm}$ and $1.5\text{mm}$ respectively are loaded with same weights. Extension of the second wire is doubl…
12. 12.The normal density of a material is $\rho$ and its bulk modulus of elasticity is $K$. The magnitude of increase indensity of material, when a pressure $P$ is applied…
13. 13.The ratio of hydraulic stress to the corresponding strain is known as
14. 14.A metal rod of length $L$, cross-sectional area $A$, Young's modulus $Y$ and coefficient of linear expansion $\alpha$ is heated to $t^{\circ }C$. The work that ca…
15. 15.The area of cross section of the rope used to lift a load by a crane is 2.5 x $10^{-4}{m}^2$. The maximum lifting capacity of the crane is 10 metric tons. To increase the…
16. 16.The work done in stretching a spring of natural length 25 $\text{cm}$ and spring constant $50{\text{Nm}}^{-1}$ from $50\text{cm}$ to $60\text{cm}$ is
17. 17.Young's modules of material of a wire of length ' $L$ ' and cross-sectional area $A$ is $Y$. If the length of the wire is doubled and cross-sectional area is halved th…
18. 18.Two wires $A$ and $B$ made of different materials of lengths 6.0 cm and 5.4 cm , respectively and area of cross sections $3.0\times {10}^{-5}{m}^2$ and…
19. 19.An electron of mass $m_e$ and a proton of mass $m_p$ are accelerated through the same potential difference. The ratio of the de-Broglie wavelength associated wi…
20. 20.The average depth of Indian ocean is about $3000m$. The value of fractional compression $\left(\frac{\Delta V}{V}\right)$ of water at the bottom of the ocean is…
21. 21.An electron moving with speed v and a photon moving with speed c, have same D-Broglie wavelength. The ratio of kinetic energy of electron to that of photon is:
22. 22.A square aluminium (shear modulus is 25 x $10^{9}N{m}^{-2}$) slab of side 60 cm and thickness 15 cm is subjected to a shearing force (on its narrow face) of 18.0 x $10^4$…
23. 23.The bulk modulus of a spherical object is’B’. If it is subjected to uniform pressure ‘p’, the fractional decrease in radius is:
24. 24.What is the work done in stretching a uniform metal wire of length from $2m$ to $2.004m$ with an area of cross section ${10}^{-6}{m}^2$ ? [Young…
25. 25.The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C is: (For steel Young's…