ICS Part 2 Physics Chapter 20 Short Questions Preparation


12th Class Physics
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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 lasing action?

  • Ans 1: When a large percentage of atom or sample is in population inversion then large number of coherent photons along same direction of motion could be obtained to form laster light,The combination of spontaneous emission of first and then stimulated emission cause the laser to generate coherent beam of light at a single frequency which is called lasing action.
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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 lasing action?

  • Ans 1: When a large percentage of atom or sample is in population inversion then large number of coherent photons along same direction of motion could be obtained to form laster light,The combination of spontaneous emission of first and then stimulated emission cause the laser to generate coherent beam of light at a single frequency which is called lasing action.
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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

What do you mean by inner shell transition?

  • Ans 1: A transition in which an electron from higher orbit,emits energy and accommodate a hole in the lower orbit.Such a transition is called inner shell transition.The photons emitted in such transition are called characteristic x-rays.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation

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