ECAT Physics Chapter 17 Physics of Solids Online Test With Answers

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ECAT Physics Chapter 17 Physics of Solids Online Test

Sr. # Questions Answers Choice
1 The modulus of elasticity can be written as stress x strain strain/stress 1/2 x stress x strain stress/strain
2 Experiments revealed that the ratio of the stress to the strain is a constant value for different material all materials a given material all of them
3 The SI unit of strain is N Dynes Pascal Dimensionless
4 The measure of the deformation in a solid when stress is applied to its is called elastic constant young's modulus strain elasticity
5 When a stress changes the shape, it is called the compressional stress tensile stress shear stress any one of them
6 When a stress changes length, it is called the compressional stress tensile stress shear stress any one of them
7 The SI unit of stress is N/m<sup>2</sup> Nmc dynes/m N
8 The force applied on unit area to produce any change in the shape, volume or length of a body is known as strain elasticity stretching stress
9 The results of mechanical tests are usually expressed in terms of stress strain stress and strain neither strees nor strain
10 The ability of the body to return to its original shape is called deformation stretching compressing elasticity
11 The crystalline structure of NaCI is rectangular hexagonal tetrahedral cubical
12 The smallest three dimensional basic structure in a crystalline solid is called lattice point crystal lattice cubic crystal unit cell
13 Polymeric solids have low specific gravity high specific gravity either of them none of them
14 Synthetic materials fall into the category of crystalline solids amorphous polymeric solids all of them
15 On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost 600<b style="color: rgb(34, 34, 34); font-family: sans-serif;">°</b>C 7600<b style="color: rgb(34, 34, 34); font-family: sans-serif;">°</b>C 800<b style="color: rgb(34, 34, 34); font-family: sans-serif;">°</b>C 900<b style="color: rgb(34, 34, 34); font-family: sans-serif;">°</b>C
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