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

Force applied on a unit area of a body to produce any change in its shape, Volume or length of a body is called:

• Strain A
• Stress B
• Young's modulus C
• Bulk modulus D
• Either (C) or (D) E

What is the bulk modulus of a material?

• strain/volumetric strain A
• volumetric stress/strain B
• stress/volumetric strain C
• volumetric stress/volumetric strain D

Super conductor offers no resistance to

• Thermal agitation A
• Electric current B
• Induced current C
• None of these D

The process of doping causes resistivity of semiconductor to

• Increase A
• Decrease B
• Same C
• Become zero D

Amorphous solids are more like

• crystalline solids A
• polymeric solids B
• glassy solids C
• any one of them D

The results of mechanical tests are usually expressed in terms of

• stress A
• strain B
• stress and strain C
• neither stress nor strain D

Hard magnetic materials are

• Iron A
• Steel B
• Alnico C
• None of these D

To make a permanent magnet, a material should have

• hihg retentivety and small coercive force A
• low retentivety and high coercive force B
• low retentivety and small coercive force C
• high retentivety and high coercive force D

The ratio of volumetric stress to volumetric strain is called

• Young's modules A
• Bulk modulus B
• Shear modulus C
• Hooke's law D

• 
  A
• 
  B
• 
  C
• 
  D

A rubber cord 100 cm long is elongated 1 cm by a stretching force of 0.2 N. The cross-sectional area of the cord is 0.04 cm². Find the Young's modulus for that rubber.

• 0.5 N cm^-2 A
• 0.05 N cm^-2 B
• 50 N cm^-2 C
• 500 N cm^-2 D

The young s modulus for a perfectly rigid body is

• Zero A
• 1 B
• Infinite C
• None of these D

The bands below the valence band are

• completely filled and play active part in conduction process A
• completely filled and plays no part in conduction process B
• not completely filled and play active part in conduction process C
• not completely filled and play no part in conduction process D

__________ does not have linear strain

• Water A
• Copper B
• Aluminum C
• Iron D

Which of the following is not crystalline solid

• Zinc A
• Copper B
• Sodium chloride C
• None of these D

When an atom is isolated, it energy levels are

• Distinct A
• Very close B
• Very very close C
• None of these D

Insulators are those materials in which valence band is

• Empty A
• Partially filled B
• Full C
• None of these D

Young's modulus for bone is

• 10 A
• 15 B
• 20 C
• 25 D

Two substances having the same crystal structure are called:

• Isomorphism A
• Subtance B
• Allotropic subtances C
• Polymorphous substances D

The motion of a charged nucleus also produces a magnetic field which is

• Weaker than orbital electrons A
• Stronger than orbital electrons  B
• Equal than orbital electrons  C
• None of these D