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In Bohr model of atom :...

In Bohr model of atom :

A

the radius of nth orbit is proportional to `n^(2)`

B

the total energy of the electron in the `n^(th)` orbit is inversely proportional to n

C

the angular momentum of the electron in an orbit is an integral multiple of `(h)/(2pi)`

D

the magnitude of the potential energy of the electron in an orbit is greater than its kinetic energy

Text Solution

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The correct Answer is:
A, C, D
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Knowledge Check

  • The Bohr's model of atoms:

    A
    assumed that the angular momentum of electrons is quantized
    B
    uses Einstein's photoelectric equation
    C
    predicts continuous emission spectra for atoms
    D
    predicts the same emission spectra for all types of atoms

  • To explain the nature of radiation, James Clark Maxwell in 1864 put forward .Electromagnetic wave theory.. This theory could explain the phenomena of interference and diffraction but could not explain phenomena of black body radiation and photoelectric effect. Also, after the advent of electromagnetic wave theory, Rutherford.s model of atom suffered a serious drawback. To explain the phenomena of black body radiation and photoelectric effect, Max planck in 1900 put forward Planck.s quantum theory. BAsed on this theory, Neils Bohr in 1913 put forward Bohr.s model of atom which could overcome the drawback of Rutherford.s model and also explain the line spectral elements, especially the line spectra of hydrogen and hydrogen-like particles. Kinetic energy of the electron ejected when yellow light of frequency 5.2 xx 10^(14) s^(-1) falls on the surface of potassium metal (threshold frequency = 5 xx 10^(14) s^(-1) ) is

    A
    `1.325 xx 10^(-13) J`
    B
    `1.325 xx 10^(-20)J`
    C
    `1.325 xx 10^(-27) J`
    D
    `1.325 xx 10^(-34) J`

  • To explain the nature of radiations, James Clark Maxwell in 1864 put forward .Electromagnetic wave theory.. This theory could explain the phenomena of interference and diffraction but could not explain phenomena of black body radiation and photoelectric effect. Also, after the advent of electromagnetic wave theory, Rutherford.s model of atom suffered a serious drawback. To explain the phenomena of black body radiation and photoelectric effect, Max planck in 1900 put forward Planck.s quantum theory. Based on this theory, Neils Bohr in 1913 put forward Bohr.s model of atom which could overcome the drawback of Rutherford.s model and also explain the line spectra of elements, especially the line spectra of hydrogen and hydrogen-like particles. Kinetic energy of the electron ejected when yellow light of frequency 5.2 xx 10^(14) s^(-1) falls on the surface of potassium metal (threshold frequency = 5 xx 10^(14) s^(-1) ) is

    A
    `1.325xx10^(-13)` J
    B
    `1.325xx10^(-20)` J
    C
    `1.325xx10^(-20)` J
    D
    `1.325xx10^(-34) J`

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    In Bohr’s model of an atom the orbits or shells are called

    To explain the nature of radiation, James Clark Maxwell in 1864 put forward .Electromagnetic wave theory.. This theory could explain the phenomena of interference and diffraction but could not explain phenomena of black body radiation and photoelectric effect. Also, after the advent of electromagnetic wave theory, Rutherford.s model of atom suffered a serious drawback. To explain the phenomena of black body radiation and photoelectric effect, Max planck in 1900 put forward Planck.s quantum theory. BAsed on this theory, Neils Bohr in 1913 put forward Bohr.s model of atom which could overcome the drawback of Rutherford.s model and also explain the line spectral elements, especially the line spectra of hydrogen and hydrogen-like particles. Which of the following statements is incorrect about electromagnetic wave theory ?

    According to Bohr model of atom

    In Bohr.s model of the hydrogen atom the ratio between the period of revolution of an electron in the orbit of n = 1 to the period of the revolution of the electron in the orbit n = 2 is

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