NEET UG Mechanical Properties of Solids — practice questions
42 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Mechanical Properties of Solids in the app →Which of the following is the correct definition of **stress** in a deformed body?A material that returns to its original shape once the deforming force is removed is said to beThe SI unit of Young's modulus isOn the stress-strain curve of a ductile material, the **proportional limit** is the point up to whichA steel wire of length $L$ and cross-section $A$ is stretched by a force $F$, producing extension $\Delta L$. Two wires A and B of the same material have lengths in the ratio $1 : 2$ and diameters in the ratio $2 : 1$. TA uniform pressure $P$ is applied isotropically to a solid sphere of bulk modulus $K$. The fractional change iThe Poisson's ratio of a material is defined asThe theoretical range of Poisson's ratio for an isotropic material isThe elastic potential energy stored per unit volume in a stretched wire (within the elastic limit) isA steel rod is clamped rigidly at both ends and then heated through a temperature rise $\Delta T$. If $\alpha$A wire of length $L$, area $A$ and Young's modulus $Y$ is stretched by hanging a mass $m$ from its free end. T\n\nIn the stress-strain curve of a ductile mater\n\nThe area under the stress-strain curve from O\n\nThe diagram above shows a block under a tange\n\nFor the spherical body subjected to uniform e\n\nThe figure compares the stress-strain curves Per NCERT §4.5, the dimensions of FORCE are which set?Per NCERT Example 4.7, the MAXIMUM acceleration of a train such that a box on its floor (μ_s = 0.15) remains sPer NCERT Example 4.10, a cyclist taking a R=3 m turn at 18 km/h (μ_s = 0.1) is in which condition?You stretch a spring gently and let go. It returns to its old length. This property is:You press a lump of putty and it keeps the new shape. Putty is close to an ideal:A steel bar looks perfectly rigid. Can a large enough force still deform it?Hooke found that the elongation of a body is proportional to the:The restoring force per unit area inside a deformed body is called:You stretch a cylinder by pulling both ends. The stress in it is called:You press a thick book down and push its top sideways. The book is under:A solid ball sits deep in a fluid under high pressure. Its volume shrinks but its shape:Strain is a ratio of two lengths, so its unit is:On a metal's stress-strain graph, the straight part from O to A is where:Point B on the curve, the yield point, is also called the:You unload a wire past its yield point and it stays stretched. The wire has a:A material's ultimate strength and fracture points are very close together. It is:Rubber and aorta tissue stretch to very large strains. Such substances are called:Tensile stress divided by longitudinal strain gives:Steel needs 2000 N for a stretch that copper manages with 1100 N. So steel is:Shear modulus G is also called the modulus of:Hydraulic stress divided by volume strain is the:You squeeze a solid block, a liquid drop and an air bubble with the same pressure. The largest bulk modulus beYou stretch a wire and its diameter shrinks slightly. The strain across the wire is called:Lateral strain divided by longitudinal strain is:A crane rope must not stretch beyond its: