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

In semiconductors, the valence band at room temperature is

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

Bulk modulus for diamond is

• 250 A
• 540 B
• 695 C
• 714 D

A hole in a semi-conductor material is treated as

• positive charge A
• negative charge B
• neutral C
• none of them D

Shear modulus for diamond is

•  156 A
• 353 B
• 450 C
• 477 D

Examples of crystalline solids are:

• Copper A
• Zirconia B
• NaCI C
• All of these D
• Both A and B E

The charged nucleus of an atom itself spins, it's magnetic field

• equals the field produced by orbital electrons A
• greater than the field produced by orbital electrons B
• much weaker than the field produced by orbital electrons C
• none of them D

A temperature at which the material losses its orderliness is know as

• Ambient temperature A
• Curie temperature B
• Highest temperature C
• None of these D

The modulus of elasticity of a liquid is:

• Zero A
• 1 B
• Infinity C
• A value not one of those mentioned above D

Amorphous solids:

• Have definite melting point A
• Are called glassy solids B
• Have no definite meting point C
• Both B and C D
• Both A and C E

Arsenic antimony or phosphorus are impurities of

• p-type A
• n-type B
• May be p-type or n-type C
• None of these D

The ability of a body to return to its original shape when applied force is removed is called

• Stress A
• Strain B
• Elasticity  C
• All of them D

Shear modulus for glass is

• 23 A
• 39 B
• 52 C
• 69 D

A piece of copper and another of germinium are cooled from room temperature to 80K. The resistance of

• Each of them increases A
• Each of them decreases B
• Copper increases and germanium for C
• Copper decreases and germanium increases D

Lead, copper and wrought iron are examples of

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

Paramagnetic substances are those in which

• Spin and orbital motions are supported A
• Spin and orbital motions are opposed B
• Spin and orbital motions supported a little C
• None of these D

• 
  A
• 
  B
• 
  C
• 
  D

In the phenomenon of hysteresis, the magnetism and magnetizing current behaves as

• I lags A
• 1 leads B B
• I & B becomes equal C
• None of these D

In case of linear deformation, the ratio of the tensile stress to the tensile strain is called

• Young's modulus A
• Bulk modulus B
• shear modulus C
• all of them D

In the hysteresis loop, when the current is reduced to zero, the material

• does not retain magnetism A
• retains not retain magnetism B
• retains strong magnetism C
• none of them D

The main reason for the high speed of bullet train is

• Magnetic effect A
• Reduced friction B
• Design of train C
• None of these D