ICS Part 2 Physics Chapter 20 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Online Short Questions For Chapter 9 "ICS Part 2 Physics Chapter 20 Short Questions Preparation "

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Physics - ICS Part 2 Physics Chapter 20 Short Questions Preparation

Question # 1

What is meant by line spectrum? How line spectrum can be used for the identification of elements?

  • Ans 1: When an electron jumps from higher energy state to lower energy state than emits energy and make a spectral line.
    E2- E1=hf
    This is called line spectrum.And different elements emit line spectrum of different wavelengths,So they can be identifiedeasily.
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Prepare Complete Set Wise Questions For Chapter 9 "ICS Part 2 Physics Chapter 20 Short Questions Preparation "

ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 1

Question # 1

What is meant by line spectrum? How line spectrum can be used for the identification of elements?

  • Ans 1: When an electron jumps from higher energy state to lower energy state than emits energy and make a spectral line.
    E2- E1=hf
    This is called line spectrum.And different elements emit line spectrum of different wavelengths,So they can be identifiedeasily.
Submit

ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 2

Question # 1

Define population inversion and metastable stable.

  • Ans 1: A condition of matter in which more electrons are in a high energy state than in a lower energy state is called population inversion.
    A particular excited state of an atom that has longer lifetime than the ordinary excited states is called metastable state.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 3

Question # 1

Define normal population and population inversion.

  • Ans 1: In normal population ,the lower energy state has a greater population than the higher energy state.
    Population inversion occurs when no more electron are in a higher energy state than in lower energy state.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation

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