NEET Physics MCQ: NCERT Bohr's Atomic Model | NEET.Guide Questions

According to Bohr's model, the angular momentum of an electron in the nth orbit is given by:

A

nh/2π

B

2π/nh

C

n/2πh

D

2nh/π

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's Model, Angular Momentum, Quantization

Related Questions

The Bohr model's assumption of a single electron orbiting the nucleus breaks down for:

A

Singly ionized Helium

B

Doubly ionized Lithium

C

Triply ionized Beryllium

D

Neutral Lithium atom

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ YEAR: 2020

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr model, atomic structure, electron configuration

The extreme wavelengths of Paschen series are

A

$0.365\,\,\mu m$ and $0.565\,\,\mu m$

B

$0.818\,\,\mu m$ and $1.89\,\,\mu m$

C

$1.45\,\,\mu m$ and $0.04\,\,\mu m$

D

$0.27\,\,\mu m$ and $7.43\,\,\mu m$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Hydrogen spectrum, Rydberg formula, Paschen series, wavelength calculation

Which of the relation is correct between time period and number of orbits while an electron is revolving in an orbit

A

${n^2}$

B

$\frac{1}{{{n^2}}}$

C

${n^3}$

D

$\frac{1}{n}$

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Bohr's atomic model, time period of electron revolution, relationship between orbital radius and principal quantum number

The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is:

A

$1\,:\, - 2$

B

$1\,:\,1$

C

$2\,:\, - 1$

D

$1\,:\, - 1$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Bohr model, kinetic energy, potential energy, total energy

The lowest energy state of an electron in Bohr's model is called the:

A

Excited state

B

Ground state

C

Valence state

D

Ionized state

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's Model, Ground State, Excited State

In the hydrogen spectrum, the Balmer series has a last line with a wave number of $2.5 imes 10^6 m^{-1}$ . Determine the corresponding Rydberg constant.

A

$2.5 imes 10^6 m^{-1}$

B

$5 imes 10^6 m^{-1}$

C

$10^7 m^{-1}$

D

$4 imes 10^7 m^{-1}$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ YEAR: 2016

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Atomic Structure, Balmer Series, Rydberg Constant

If the radius of the first Bohr orbit of a hydrogen atom is $5.3 imes 10^{-11}$ m, what is the radius of the second allowed orbit?

A

$1.06 imes 10^{-10}$ m

B

$2.12 imes 10^{-10}$ m

C

$4.24 imes 10^{-10}$ m

D

$1.59 imes 10^{-10}$ m

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ YEAR: 2023

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Atomic Structure, Bohr Model

The ionisation energy of ${\rm{10 }}\,{\rm{times}}$ ionised sodium atom is

A

$13.6\,\,eV$

B

$13.6\,\, imes \,\,11\,\,eV$

C

$\frac{{13.6}}{{11}}eV$

D

$13.6\,\, imes \,\,{\left( {11} \right)^2}\,\,eV$

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Ionization energy, Bohr's model, Atomic number

In a hydrogen atom, the kinetic energy of the electron in a particular Bohr orbit is $2.18 imes 10^{-18}$ J. What is the total energy of the electron in this orbit?

A

-2.18 x 10^-18 J

B

2.18 x 10^-18 J

C

-4.36 x 10^-18 J

D

4.36 x 10^-18 J

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ YEAR: 2018

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Atomic Structure, Bohr's Model

According to Bohr’s theory, the moment of momentum of an electron revolving in second orbit of hydrogen atom will be

A

$\begin{array}{*{20}{l}}

{2,,{\rm{\pi }}h}

\end{array}$

B

${\rm{\pi }}h$

C

$\frac{h}{{\rm{\pi }}}$

D

$\frac{{2h}}{{\rm{\pi }}}$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Bohr's theory, angular momentum, quantization

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