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Online Short Questions For Chapter 6 "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

Describe the difference between proportional limit and elastic limit.

  • Ans 1: Proportional Limit: The greatest stress that a material can endure without losing straight line proportionally between stress and strain.Hooke's law is obeyed in this region.
  • Ans 2: Elastic limit: The greatest stress that a material can endure without any permanent deformation is called elastic limit.This kind of behavior is called elasticity.
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Prepare Complete Set Wise Questions For Chapter 6 "ICS Part 2 Physics Chapter 17 Short Questions Preparation "

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 1

Question # 1

Describe the difference between proportional limit and elastic limit.

  • Ans 1: Proportional Limit: The greatest stress that a material can endure without losing straight line proportionally between stress and strain.Hooke's law is obeyed in this region.
  • Ans 2: Elastic limit: The greatest stress that a material can endure without any permanent deformation is called elastic limit.This kind of behavior is called elasticity.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 2

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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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 3

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 - Set 4

Question # 1

Distinguished between p-type semiconductor and n-type semiconductor.

  • Ans 1: p-type semiconductor:When a trivalent impurity such as aluminium is added into the semiconductor,holes are generated and p type semiconductor is formed.Holes are positive charge carrier.
  • Ans 2: n-type semiconductor: When a pentavalent impurity such as phosphorus is added into the semiconductor,free electrons are generated and n type semiconductor is formed.Charge carriers is in n-type are free electrons.
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