ICS Part 2 Physics Chapter 19 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 19 Short Questions Preparation

Question # 1

Define work function and threshold frequency.

  • Ans 1: The minimum amount of energy required to remove electrons from a metal surface is called work function of this metal.
    The minimum frequency below which photoelectric effect can not occur from a metal surface is called threshold frequency of this metal.
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Prepare Complete Set Wise Questions For Chapter 8 "ICS Part 2 Physics Chapter 19 Short Questions Preparation "

ICS Part 2 Physics Chapter 19 Short Questions Preparation - Set 1

Question # 1

Define work function and threshold frequency.

  • Ans 1: The minimum amount of energy required to remove electrons from a metal surface is called work function of this metal.
    The minimum frequency below which photoelectric effect can not occur from a metal surface is called threshold frequency of this metal.
Submit

ICS Part 2 Physics Chapter 19 Short Questions Preparation - Set 2

Question # 1

What are conclusion made from the pair production?

  • Ans 1: Pair production is the creation of an elementary particle and its antiparticle,Pair production offers refers specifically to a photon creating an electron positron pair near a nucleus but can more generally refer to any particle antiparticle pair creation.
    Energy can be converted into mass according to E=mc2
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ICS Part 2 Physics Chapter 19 Short Questions Preparation - Set 3

Question # 1

Define Stopping potential and Threshold frequency.

  • Ans 1: Stopping potential:The stopping potential is the potential difference applied to stop the electrons from being ejected from the surface when the light fall on it.
    Threshold frequency:The minimum of frequency of incident light at which electrons are emitted from a surface is called threshold frequency.
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ICS Part 2 Physics Chapter 19 Short Questions Preparation

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