MDCAT Physics Chapter 13 Deformation of Solids MCQ's Test With Answers

MDCAT Physics Chapter 13 Deformation of Solids MCQ's Test

Sr. # Questions Answers Choice
1 Substances which undergo plastic deformation until they break, are known as brittle substances ductile substances plastic substances neither of them
2 The maximum stress that a material can withstand is known as plastic point elastic point yield point ultimate tensile strength
3 When the deformation produced in the material becomes permanent, this type of behaviour is called proportionality elasticity plasticity none of them
4 Under the elastic region, the deformation produced in the material is permanent temporary either of them none of them
5 In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as plastic limit plastic deformation proportional limit elastic behaviour
6 The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structures are 5 7 9 14
7 When the shear stress and shear strain are involved, then their ratio is called Young's modulus Bulk modulus Shear modulus all of them
8 In case of linear deformation, the ratio of the tensile stress to the tensile strain is called Young's modulus Bulk modulus shear modulus all of them
9 In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric stain is called Young's modulus Bulk modulus shear modulus all of them
10 The ratio of shearing stress/shearing strain is called as modulus Pascal modulus Hooke's modulus shear modulus
11 The ratio of volume stress/volume strain is called as modulus Bulk modulus shear modulus Young's modulus
12 The ratio of linear stress/linear strain is called Yong's modulus Bulk modulus shear modulus modulus
13 The modulus of elasticity can be written as stress x strain strain/stress 1/2 x stress x strain stress/strain
14 Experiments revealed that the ratio of the stress to the strain is a constant value for different material all material a given material all of them
15 The SI unit of strain is N dynes pascal dimensionless
16 The measure of the deformation in a solid when stress in applied to it is called elastic constant Young's modulus strain elasticity
17 When a stress changes the shape, it is called the compressional stress tensile stress shear stress any one of them
18 When a stress changes the volume, it is called the compressional stress tensile stress shear stress any one of them
19 When a stress changes length, it is called the compressional stress tensile stress shear stress any one of them
20 The SI unit of stress is Nm<sup>2</sup> Nm dynesm<sup>-1</sup> N
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