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

What is fluorescence?

  • Ans 1: Fluorescence is a property of absorbing radiant energy of high frequency and re emitting energy of low frequency in the visible region of electromagnetic spectrum.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 3

Question # 1

Write down use of laser in industry.

  • Ans 1: It can be used for telecommunication in fibre optics.
    It is used to read bar codes,
    It is used to generate 3D image of objects by holography.
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20th Chapter

ICS Part 2 Physics Chapter 20 Short Questions Preparation

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