English

The radii of Bohr orbit are directly proportional to ______ - Physics

Advertisements
Advertisements

Question

The radii of Bohr orbit are directly proportional to ______ 

Options

  • Principal quantum number

  • Square of principal quantum number

  • Cube of principal quantum number

  • Independent of principal quantum number

MCQ
Fill in the Blanks
Advertisements

Solution

The radii of Bohr orbit are directly proportional to the Square of principal quantum number. 

shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Structure of Atoms and Nuclei - MCQ’S

APPEARS IN

SCERT Maharashtra Physics [English] 12 Standard HSC
Chapter 15 Structure of Atoms and Nuclei
MCQ’S | Q 2

RELATED QUESTIONS

Explain Brackett series of spectral lines for the hydrogen atom.

Answer in brief.

State the postulates of Bohr’s atomic model.


Derive the expression for the energy of an electron in the atom.


According to Bohr's second postulate, the angular momentum of the electron is the integral multiple of `h/(2pi)`. The S.I unit of Plank constant h is the same as ______ 


What is the energy of an electron in a hydrogen atom for n = ∞?  


Which of the following series of transitions in the spectrum of hydrogen atom falls in ultraviolet region?


The wavelength of the first line in Balmer series in the hydrogen spectrum is 'λ'. What is the wavelength of the second line in the same series?


Which of the following statements about the Bohr model of the hydrogen atom is FALSE?


When the electron in hydrogen atom jumps from fourth Bohr orbit to second Bohr orbit, one gets the ______.


What is the de Broglie wavelength of an electron of energy 180 eV?

(Mass of electron = 9 x 10-31 kg and Planck's constant = 6.6 x 10-34 Js.)


In Bohr's model of hydrogen atom, the period of revolution of the electron in any orbit is proportional to ______.


In the nth orbit, the energy of an electron `"E"_"n"= -13.6/"n"^2"eV"` for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be ____________.


For an electron, discrete energy levels are characterised by ____________.


If the speed of an electron of hydrogen atom in the ground state is 2.2 x 106 m/s, then its speed in the third excited state will be ______.


The time of revolution of an electron around a nucleus of charge Ze in nth Bohr orbit is directly proportional to ____________.


When an electron in hydrogen atom is excited from its 3rd to 5th stationary orbit, tbe change in angular momentum of electron is (Planck's constant: h = 6.62 x 10-34 Js) ____________.


In hydrogen spectnun, the wavelengths of light emited in a series of spectral lines is given by the equation `1/lambda = "R"(1/3^2 - 1/"n"^2)`, where n = 4, 5, 6 .... And 'R' is Rydberg's constant.
Identify the series and wavelenth region.


Angular speed of an electron in the ground state of hydrogen atom is 4 × 1016 rad/s. What is its angular speed in 4th orbit?


The minimum energy required to excite a hydrogen atom from its ground state is ____________.


In hydrogen atom, during the transition of electron from nth outer orbit to first Bohr orbit, a photon of wavelength `lambda` is emitted. The value of 'n' is [R =Rydberg's constant] ____________.


When an electron in a hydrogen atom jumps from the third orbit to the second orbit, it emits a photon of wavelength 'λ'. When it jumps from the fourth orbit to third orbit, the wavelength emitted by the photon will be ______.


If Vn and Vp are orbital velocities in nth and pth orbit respectively, then the ratio Vp: Vn is ______.


The momentum of an electron revolving in nth orbit is given by ______.


When an electron in hydrogen atom revolves in stationary orbit, it ______.


The orbital frequency of an electron in the hydrogen atom ______.


Show that the angular speed of an electron in the nth Bohr orbit is w = `(πme^4)/(2ε_0^2h^3n^3)` and the corresponding frequency of the revolution of the electron is f = `(me^4)/(4ε_0^2h^3n^3)`.


Compute the shortest and the longest wavelength in the Lyman series of hydrogen atom.


Find the ratio of radius of 1st Bohr orbit to that of 4th Bohr orbit.


The radius of the first Bohr orbit in the hydrogen atom is 0.5315 Å. The radius of the second Bohr orbit in the hydrogen atom is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×