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

The field of a long bar magnet is like a

• Two pole pieces of magnet A
• Solenoid B
• Toroid C
• None of these D

The SI unit of stress is

• Nm² A
• Nm B
• dynesm^-1 C
• N D

For obtaining appreciable extension,the wire should be:

• Short and thin A
• Long and thin B
• Short and tick C
• Long and thick D

The materials in which there are plenty of free electrons for electrical conduction are known as

• conductors A
• insulators B
• semi-conductors C
• all of them D

The solids are classified as:

• Metals A
• Crystalline B
• Amorphous C
• Polymeric D
• All expect A E

What is the Young modulus of a meta?

• Extension/force A
• Force/extension B
• Strain/stress C
• Stress/strain D

The band full of electrons, which donot play any part in the conduction process is known as

• Conduction band A
• Forbidden energy band B
• Valence band C
• Completely filled band D

• 
  A
• 
  B
• 
  C
• 
  D

The measure of deformation of a solid when stress is applied to it is called

• Strain A
• Stress B
• Force C
• None of these D

Which of the following pair of quantities have the same units?

• stress, Young's modulus A
• Young's modulus, bulk modulus B
• Stress, bulk modulus C
• All of them D

If S is the stress and Y is Young's modulus of the material of a wire, the energy stored in the wire per unit volume is

• 2 S²Y A
• S²/2Y B
• 2Y/S² C
• S/2Y D

The ratio of stress/strain is called as

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

In superconductors, the resistance of a material drops to zero and no

• Power is dissipated  A
• Energy is dissipated  B
• Current is dissipated  C
• None of these D

In metallic crystals which of the following thing remains constant?

• amplitude of oscillations A
• temperature of solid B
• average atomic positions C
• all of them D

In semiconductor Si or Ge a missing electron in covalent bond from an atom is a

• Charged atom A
• Hole B
• Ion C
• All of them D

The fractional change in volume per unit increase is pressure in called:

• Pressure coefficient A
• Volume coefficient B
• Bulk modulus C
• Compressibitlity D

Which one is ferromagnetic

• Ferries A
• Cobalt B
• Nickel C
• All D

Polymers have chemically combinations with

• Carbon  A
• Nitrogen  B
• Hydrogen  C
• All of them D

Every crystalline solid has a melting point

• Definite A
• Not definite B
• Any C
• Change every time D

Remanance or Retentivity is the phenomenon in which the material still remains strongly magnetized when curve is

• Increase to maximum A
• Reduce to minimum B
• Reduce to zero C
• None of these D