MDCAT Physics Chapter 13 MCQ Test With Answer for (Deformation of Solids)

Which of the following is not true for a crystalline substance

• Shorter range order A
• Isotropic electrical conductivity B
• Flat surface C
• Sharp melting point D

Substances which undergo plastic deformation until they break, are known as

• brittle substances A
• ductile substances B
• plastic substances C
• neither of them D

With rise in temperature the electric conductivity of intrinsic semiconductor

• Increases A
• Decreases B
• First increases and then decreases C
• First decreases and then increases D

Bulk modulus for tungsten is

• 50 A
• 100 B
• 150 C
• 200 D

The S.I. unit of stress is also

• Force A
• Pascal B
• Momentum C
• None of these D

Stress is defined in terms of:

• Applied force A
• Deformation B
• Formation C
• Any of these D
• None of these E

When a stress changes the volume, it is called the

• compressional stress A
• tensile stress B
• shear stress C
• any one of them D

Stress beyond which a permanent deformation is observed in a body is called

• Minimum stress A
• Maximum B
• Yield stress C
• Plastic stress D

Young's modulus for bone is

• 10 A
• 15 B
• 20 C
• 25 D

Shear modulus for water is

• - 4.7 A
• - 3.3 B
• - 1.2 C
• 0 D

Young's modulus for lead is

• 10 A
• 11 B
• 15 C
• 19 D

The maintaining the elastic limits of any body, the relation stress to strains is called

• Hooke's law A
• Pascal's law B
• Young's law C
• None of them D

When a silicon crystal is doped with a trivalent element, such an extrinsic semi-conductor is called

• p-type semi-conductor A
• n-type semi-conductor B
• either of them C
• none of them D

Crystalline solids are also

• Metals A
• Ionic compound B
• Ceramics C
• All of them D

Lead, copper and wrought iron are examples of

• brittle substances A
• ductile substances B
• plastic substances C
• elastic substances D

The substance, which exists in two or more crystal forms under different conditions is called:

• Isomorphism Substance A
• Allotropic substances B
• True substances C
• Polymorphous substances D

• 
  A
• 
  B
• 
  C
• 
  D

Young's modulus for diamond is

• 700 A
• 913 B
• 1100 C
• 1120 D

The ratio of kinetic energy to potential energy for solids is

• 
  A
• 
  B
• 
  C
• 
  D

The amplitude of oscillation of each atom in a metallic crystal rises with the

• rise in temperature A
• decrease in temperature B
• even temperature remains constant C
• all of them D