ICS Part 2 Physics Chapter 17 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 17 Short Questions Preparation

Question # 1

Define young modulus and shear modulus.

  • Ans 1: The ratio of tensile stress to tensile strain is called young modulus.
  • Ans 2: The ratio of shear stress to shear strain is called shear modulus.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 1

Question # 1

Define young modulus and shear modulus.

  • Ans 1: The ratio of tensile stress to tensile strain is called young modulus.
  • Ans 2: The ratio of shear stress to shear strain is called shear modulus.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 2

Question # 1

Describe energy band picture of insulators.

  • Ans 1: Insulators are those materials in which valence electron are bound to very tight to their atoms and are not free.In terms of energy bands,it means that an insulator has:
    • An empty conduction band
    • A full valence band
    • A large energy gap
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 3

Question # 1

How can the strain energy be determined from the force extension graph?

  • Ans 1: Strain energy can be determined from the force extension graph according to the following relation
    Strain energy :1/2 l1F1

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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 4

Question # 1

Define yield point and ultimate tensile stress.

  • Ans 1: Yield point: The point on the stress-strain curve beyond which if stress is further increased then permanent deformation takes place in the given specimen.This is called yield point.
    Ultimate tensile stress: The maximum stress that a material can withstand called ultimate tensile stress.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation