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

How can spectrum of hydrogen contain so many lines,whereas hydrogen atom contain one electron?

  • Ans 1: The single electron in hydrogen atom occupies ground state but it can be excited to several states by absorbing energy.During de-excitation ,it can emit several lines of different wavelength.
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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

How can spectrum of hydrogen contain so many lines,whereas hydrogen atom contain one electron?

  • Ans 1: The single electron in hydrogen atom occupies ground state but it can be excited to several states by absorbing energy.During de-excitation ,it can emit several lines of different wavelength.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 2

Question # 1

What do we mean when we say that the atom is excited?

  • Ans 1: When energy from some external source is provide to an atom in its normal state,then its electron will jump from lower energy state to higher energy state.And atom is said to be excited.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 3

Question # 1

Differentiate between Line and Band spectrum.

  • Ans 1: Line spectrum: When electron jumps from higher orbit to lower orbit ,it emits energy,This emission of energy constitutes spectral line,This is called the line spectrum.
  • Ans 2: Band spectrum:is produced by molecules,They are the groups of lines which are closely spaced to another.
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Physics
20th Chapter

ICS Part 2 Physics Chapter 20 Short Questions Preparation

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