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Atoms and Nucle...

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  • Question 1
    4 / -1

    In Bohr\'s model of hydrogen atom, let PE represents potential energy and TE the total energy. In going to a higher level

  • Question 2
    4 / -1

    The extreme wavelengths of Paschen series are

  • Question 3
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    The third line of Balmer series of an ion equivalent to hydrogen atom has wavelength of 108.5 nm. The ground state energy of an electron of this ion will be

  • Question 4
    4 / -1

    The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true

  • Question 5
    4 / -1

    Kα and Kβ, X-rays are emitted when there is a transition of electron between the levels

  • Question 6
    4 / -1

    Orbital acceleration of electron is

  • Question 7
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    Which of the following is true for number of spectral lines in going from Lyman series to P-fund series ?

  • Question 8
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    Energy of an electron in an excited hydrogen atom is –3.4 eV. Its angular momentum will be

  • Question 9
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    The ratio of speed of an electron in ground state in Bohr\'s first orbit of hydrogen atom to velocity of light in air is

  • Question 10
    4 / -1

    The de-Broglie wavelength of an electron in the first Bohr orbit is

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