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

Elastic deformation of a material is the deformation which is

• Permanent  A
• Temporary  B
• Some what permanent  C
• None of these 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

In a cubic crystal, all the sides meet at:

• 60° A
• 90° B
• 109° C
• 30° D
• 10° E

In terms of energy bands, semiconductors are those materials which at room temperature have conduction band

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

If stress is increased beyond the elastic limit a permanent change in the material is observed This behavior is called

• Elastic deformation A
• Elasticity B
• Plasticity C
•  Yield strength D

The magnetic fields are produced by the 

• Moving charges A
• Bar magnets B
• Motion of conductor in a magnetic field C
• All of them D

• 
  A
• 
  B
• 
  C
• 
  D

The temperature below which materials are superconductor is called as:

• Kelvin temperature A
• Critical temperature B
• Curie temperature C
• none of these D

Bulk modulus for lead is

• 2.9 A
• 7.7 B
• 9.3 C
• 15.6 D

A geometric shape of a solid obtained by regular, respetive, three-dimensional arrangements of its molecules,atoms or ions is called a:

• Crystal A
• Crystal Lattice B
• Crystal plane C
• None of these D

Brittle is the property of the substance in which a material undergoes

• Elastic deformation A
• Plastic deformation B
• Ultimate tensile strength limit C
• None of these D

The ratio of linear stress/linear strain is called as

• Young's modulus A
• Bulk modulus B
• Shear modulus C
• Modulus D

Acceptor impurities donate

• Holes A
• Electrons B
• Both Electrons and Holes C
• None of them D

The high-tensile steel used to support the roadway of a suspension bridge breaks under a stress of 2 x 10⁹Pa. Find the minimum cross-sectional area for a cable if it is to support a load of mass 2 x 10⁵kg.

(g = 10 N kg^-1)

• 10^-2m² A
• 10^-1m² B
• 10^-4m² C
• 10^-3m² D

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

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

• plastic limit A
• plastic deformation B
• proportional limit C
• elastic behaviour D

Which of the following is not dimension less

• Poission ration A
• Sharing strain B
• Longitudinal strain C
• Volume stress D

Shear modulus for copper is

• 20 A
• 27 B
• 44 C
• 43 D

Steel is preferred for making permanent magnets because it has

• Large retentivity and large coercively A
• Small retentively and small coercively B
• Large retentively and small soercively C
• Small retentively and large coactivity D

Crystalline solids are in the form of:

• Metals A
• Ionic compounds B
• Ceramics C
• Both A and B D
• All of these E