ICS Part 2 Physics Chapter 17 Short Questions Preparation


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Physics - ICS Part 2 Physics Chapter 17 Short Questions Preparation

Question # 1

Define crystalline and amorphous.

  • Ans 1: Crystalline: The solid in which there is a regular and periodic arrangements of the atoms and molecule are crystalline solids.
    Amorphous: The solid in which there is no regular arrangement of molecules like that in crystalline solids are called amorphous solid. for example ordinary glass.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 1

Question # 1

Define crystalline and amorphous.

  • Ans 1: Crystalline: The solid in which there is a regular and periodic arrangements of the atoms and molecule are crystalline solids.
    Amorphous: The solid in which there is no regular arrangement of molecules like that in crystalline solids are called amorphous solid. for example ordinary glass.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 2

Question # 1

Define elastic limit and Yield point.

  • Ans 1: The greatest stress that a material can endure without any permanent deformation is called elastic limit.This kind of behavior is called elasticity.
    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.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 3

Question # 1

What is the difference between intrinsic and extrinsic semiconductors?

  • Ans 1: Intrinsic Semiconductor:A semiconductor in its extremely pure form is known as Intrinsicsemiconductors,Pure elements of silicon and germanium are Intrinsic semiconductors,These semiconductors elements have atoms with four valence electrons.
  • Ans 2: Extrinsic Semiconductor: The doped semiconductors material are called Extrinsic Semiconductor.The electrical behaviour of semiconductors is substantially changed introducing a small impurity into pure semiconductors,and this process is called doping.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 4

Question # 1

Define insulators ,conductors and semiconductors.

  • Ans 1: Insulator: Those substance which have valence electrons tightly bound to their atoms are called insulators.
    Conductors: Those substance which have plenty of free electrons for electrical conduction are called conductors,
    Semiconductors:Those substance which have intermediate range of conductivities are called semiconductors e.g germanium and silicon.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation

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