ICS Part 2 Physics Chapter 20 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 20 Short Questions Preparation

Question # 1

Can the electron in the ground state of hydrogen atom absorb a photon of energy 13.6 eV greater than 13.6 eV?

  • Ans 1: Yes an electron in the ground state of hydrogen atom can absorb a photon of energy 13.6 eV and greater than 13.6 eV.
    ionization energy of hydrogen atom in ground state is 13.6 eV.So if hydrogen absorb a photon of energy greater than 13.6 eV than the surplus energy of photon appear as K.E of electron
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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

Can the electron in the ground state of hydrogen atom absorb a photon of energy 13.6 eV greater than 13.6 eV?

  • Ans 1: Yes an electron in the ground state of hydrogen atom can absorb a photon of energy 13.6 eV and greater than 13.6 eV.
    ionization energy of hydrogen atom in ground state is 13.6 eV.So if hydrogen absorb a photon of energy greater than 13.6 eV than the surplus energy of photon appear as K.E of electron
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 2

Question # 1

Write two postulate of Bohr's model of H-atom.

  • Ans 1:
    • An electron ,bound to the nucleus in an atom,can moved around the nucleus in certain circular orbits without radiating,These orbits are called the discrete stationary orbits.
    • Only those stationary orbits are allowed for which orbital angular momentum is equal to an integral multiple mvr=nh/2π.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 3

Question # 1

Is energy conserved when an atom emits a photon of light?

  • Ans 1: Yes energy is conserved when an excited atom emits a photon of light.When atom is excited ,energy is supplied .The same energy is emitted in the form of photon when it return back to its ground state.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation

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