NEET Physics Atoms MCQs

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Alpha Ray Scattering

Bohr'S Model Of Atom

In the Bohr model, the ratio of the kinetic energy (K) to the potential energy (U) of an electron in the nth orbit is:

A

1/2

B

-1/2

C

1

D

-1

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Understanding

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's model, kinetic energy, potential energy

The ratio of kinetic energy (K) to the potential energy (U) of an electron in a Bohr orbit of the hydrogen atom is:

A

1/2

B

-1/2

C

1

D

-1

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ Year :2018

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's model, Kinetic energy, Potential energy

The potential energy of an electron in a particular Bohr orbit is -2E. What is its kinetic energy?

A

-E

B

2E

C

-2E

D

E

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ Year :2018

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's model, Kinetic energy, Potential energy

Which of the following correctly relates the kinetic energy (K), potential energy (U), and total energy (E) of an electron in a Bohr orbit?

A

K = U/2

B

K = -U

C

K = U

D

K = -U/2

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ Year :2018

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's model, Kinetic energy, Potential energy, Total energy

In a Bohr orbit, the magnitude of the potential energy of an electron is twice its kinetic energy. If the total energy is -13.6 eV, what is the potential energy?

A

13.6 eV

B

-13.6 eV

C

27.2 eV

D

-27.2 eV

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

PYQ Year :2018

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's model, Kinetic energy, Potential energy, Total energy

An elementary particle of mass $m$ and charge $+ e$ is projected with velocity $v$ at a much more massive particle of charge $Ze,$ where $Z > 0.$ What is the closest possible approach of the incident particle

A

$\frac{{Z{e^2}}}{{2\pi {\varepsilon _0}m{v^2}}}$

B

$\frac{{Ze}}{{4\pi {\varepsilon _0}m{v^2}}}$

C

$\frac{{Z{e^2}}}{{8\pi {\varepsilon _0}m{v^2}}}$

D

$\frac{{Ze}}{{8\pi {\varepsilon _0}m{v^2}}}$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Alpha Ray Scattering

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Conservation of energy, Electrostatic potential energy, Kinetic energy

An elementary particle of mass $m$ and charge $+ e$ is projected with velocity $v$ at a much more massive particle of charge $Ze,$ where $Z > 0.$ What is the closest possible approach of the incident particle

A

$\frac{{Z{e^2}}}{{2\pi {\varepsilon _0}m{v^2}}}$

B

$\frac{{Ze}}{{4\pi {\varepsilon _0}m{v^2}}}$

C

$\frac{{Z{e^2}}}{{8\pi {\varepsilon _0}m{v^2}}}$

D

$\frac{{Ze}}{{8\pi {\varepsilon _0}m{v^2}}}$

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Alpha Ray Scattering

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Conservation of Energy, Electrostatic Potential Energy, Kinetic Energy

Energy of electron in an orbit of $H$ -atom is

A

Positive

B

Negative

C

Zero

D

Nothing can be said

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Atomic structure, Energy levels, Potential energy

Energy of electron in an orbit of $H$ -atom is

A

Positive

B

Negative

C

Zero

D

Nothing can be said

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Bohr's atomic model, energy levels, potential energy, kinetic energy

Energy of electron in an orbit of $H$ -atom is

A

Positive

B

Negative

C

Zero

D

Nothing can be said

Question Tags

📚 Subject:Physics

📑 Chapter:Atoms

🎯Topic:Bohr'S Model Of Atom

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :atomic structure, energy levels, potential energy

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