NEET Physics MCQ: NCERT Atomic Spectra | NEET.Guide Questions

Work required to pull an electron from helium atom is 40 eV. Then the work required to pull both the electrons from the helium atom is

A

80 eV

B

84 eV

C

40 eV

D

94.4 eV

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Atomic Specta

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :ionization energy, electron shielding, atomic structure

Related Questions

In Bohr’s model, if the atomic radius of the first orbit is ${r_0}$ , then the radius of the fourth orbit is

A

${r_0}$

B

$4\,{r_0}$

C

${r_0}/16$

D

$16\,{r_0}$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Bohr's model, atomic radius, quantum numbers

The energy of the highest energy photon of Balmer series of hydrogen spectrum is close to

A

$13.6\,\,eV$

B

$3.4\,\,eV$

C

$1.5\,\,eV$

D

$0.85\,\,eV$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Hydrogen Spectrum, Balmer Series, Energy Levels, Photon Energy

Orbital acceleration of electron is

A

$\frac{{{n^2}{h^2}}}{{4{\pi ^2}\,{m^2}\,{r^3}}}$

B

$\frac{{{n^2}{h^2}}}{{2{n^2}\,{r^3}}}$

C

$\frac{{4\,{n^2}{h^2}}}{{{\pi ^2}\,{m^2}\,{n^3}}}$

D

$\frac{{4\,{n^2}{h^2}}}{{4{\pi ^2}\,{m^2}\,{r^3}}}$

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

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

The transition of an electron from ${n_2} = 5,6, \ldots \ldots$ to ${n_1} = 4$ gives rise to

A

Pfund series

B

Lyman series

C

Paschen series

D

Brackett series

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Atomic Specta

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Atomic spectra, Hydrogen atom, Energy levels

Orbital acceleration of electron is

A

$\frac{{{n^2}{h^2}}}{{4{\pi ^2}\,{m^2}\,{r^3}}}$

B

$\frac{{{n^2}{h^2}}}{{2{n^2}\,{r^3}}}$

C

$\frac{{4\,{n^2}{h^2}}}{{{\pi ^2}\,{m^2}\,{n^3}}}$

D

$\frac{{4\,{n^2}{h^2}}}{{4{\pi ^2}\,{m^2}\,{r^3}}}$

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Bohr's model, centripetal acceleration, quantization of angular momentum

An electron changes its position from orbit $n = 4$ to the orbit $n = 2$ of an atom. The wavelength of the emitted radiation is ( $R =$ Rydberg’s constant)

A

$\frac{{16}}{R}$

B

$\frac{{16}}{{3\,R}}$

C

$\frac{{16}}{{5\,R}}$

D

$\frac{{16}}{{7\,R}}$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Atomic Spectra, Rydberg Formula, Energy Levels, Wavelength of Light

What is the radius of iodine atom (at. no. ${\rm{53}}$ , mass number ${\rm{126}}$ )

A

70 pm

B

140 pm

C

210 pm

D

280 pm

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Atomic Specta

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :atomic radius, order of magnitude

The wavelength of the first line of the Lyman series in the hydrogen spectrum is approximately:

A

121.6 nm

B

656.3 nm

C

1875 nm

D

3.282 nm

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Atomic spectra, Hydrogen spectrum, Lyman series, Rydberg formula

Which of the following transitions will have highest emission wavelength

A

$n = 2$ to $n = 1$

B

$n = 1$ to $n = 2$

C

$n = 2$ to $n = 5$

D

$n = 5$ to $n = 2$

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :energy levels, emission, wavelength, energy of photon

The energy of electron in the nth orbit of hydrogen atom is expressed as ${E_n} = \frac{{ - 13.6}}{{{n^2}}}eV$ . The shortest and longest wavelength of Lyman series will be

A

$910\,\,{A^0},\,\,1213\,\,{A^0}$

B

$5463\,\,{A^0},\,\,7858\,\,{A^0}$

C

$1315\,\,{A^0},\,\,1530\,\,{A^0}$

D

None of these

Question Tags

📚 Subject:Physics

📑 Chapter:Nuclei

🎯Topic:Atomic Specta

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Energy levels, Atomic spectra, Rydberg formula, Lyman series, Wavelength-energy relation

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