Second Year Physics Chapter 6 Short Questions Online Preparation

Online Short Questions For Chapter 6 "12th Class Physics Chapter 6 Short Questions Preparation "

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Physics - 12th Class Physics Chapter 6 Short Questions Preparation

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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Prepare Complete Set Wise Questions For Chapter 6 "12th Class Physics Chapter 6 Short Questions Preparation "

12th Class Physics Chapter 6 Short Questions Preparation - Set 1

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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12th Class Physics Chapter 6 Short Questions Preparation - Set 2

Question # 1

Distinguished between a valence and a conduction band.

  • Ans 1: Valence bond: The energy band occupied by valence electrons is called the valence band.
  • Ans 2: Conduction band:The energy band are occupied by free electrons is called the conduction band.
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12th Class Physics Chapter 6 Short Questions Preparation - Set 3

Question # 1

What is meant by strain energy?How can it be determined from the force extension of graph?

  • Ans 1: The amount of P.E stored in a material due to displacement of its molecule from its equilibrium position.under the action of stress is called strain energy,Strain energy can be determined from the force extension graph according to the following reasons
    Strain energy=1/2L1F1
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12th Class Physics Chapter 6 Short Questions Preparation - Set 4

Question # 1

How n type semiconductors are formed?

  • Ans 1: When a silicon crystal is doped with a pentavalent element,e.g arsenic,antimony or phosphorus etc.four valence electrons of the impurity atom form covalent bond with the four neighbouring Si atoms,while the fifth valence electrons provide a free electron in the crystal.Such a doped semiconductor is called n type semiconductor.
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