If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Physics Chapterwise. In this article of AKVTutorials, you will get Atoms CBSE Class 12 Physics MCQ Questions with Answer Keys Solutions .
MCQ Questions for Class 12 Physics Atoms Question No 11:
The angular momentum of the electron in the nth allowed orbit is
Option A : ph / 2π
Option B : h / π
Option C : 2h / π
Option D : nh / 2π
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Option D : nh / 2π
MCQ Questions for Class 12 Physics Atoms Question No 12:
Kinetic energy of electron in hydrogen atom is
Option A : e 2/ 4πε0r
Option B : e 2/ 8πε0r
Option C : e 3/ 8πε0r
Option D : e 2/ 3πε0r
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Option B : e 2/ 8πε0r
MCQ Questions for Class 12 Physics Atoms Question No 13:
What is the order of velocity of electron in a hydrogen at
Option A : 106 ms-1
Option B : 102 ms-1
Option C : 1010 ms-1
Option D : 109 ms-1
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Option A : 106 ms-1
MCQ Questions for Class 12 Physics Atoms Question No 14:
The minimum energy required to knock an e-completely
Option A : Kinetic energy
Option B : Potential energy
Option C : Ionisation energy
Option D : Excitation energy
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Option C : Ionisation energy
MCQ Questions for Class 12 Physics Atoms Question No 15:
In Bohr model of the hydrogen atom, the lowest orbit corresponds to
Option A : Infinite energy
Option B : The maximum energy
Option C : The minimum energy
Option D : Zero energy
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Option C : The minimum energy
MCQ Questions for Class 12 Physics Atoms Question No 16:
An electron in then n=1 orbit of hydrogen atom is bound by 13.6 eV. If a hydrogen atom is in then n=3 state, how much energy is required
Option A : 13.6 eV
Option B : 4.53 eV
Option C : 3.4 eV
Option D : 1.51 eV
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Option D : 1.51 eV
MCQ Questions for Class 12 Physics Atoms Question No 17:
If an electron jumps from 1st orbit to 3rd orbital, then it will
Option A : Absorb energy
Option B : Release energy
Option C : No change of energy
Option D : None of these
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Option A : Absorb energy
MCQ Questions for Class 12 Physics Atoms Question No 18:
Which one of these is non-divisible?
Option A : Nucleus
Option B : Photon
Option C : Proton
Option D : Atom
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Option B : Photon
MCQ Questions for Class 12 Physics Atoms Question No 19:
To explain his theory, Bohr used
Option A : Conservation of linear momentum
Option B : Conservation of angular momentum
Option C : Conservation of quantum frequency
Option D : Conservation of energy
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Option B : Conservation of angular momentum
MCQ Questions for Class 12 Physics Atoms Question No 20:
Hydrogen atoms are excited from ground state of principal quantum number 4. Then the number of spectral lines observed will be:
Option A : 3
Option B : 6
Option C : 5
Option D : 8
Show/Hide Answer
Option B : 6
| CBSE Class 12 Physics Chapterwise MCQ |
|---|
| 1 : Electric Charge & Fields MCQs | 1 to 10 | 11 to 20 |
| 2 : Electrostatics Potential and Capacitance MCQs | 1 to 10 | 11 to 20 |
| 3 : Current Electricity MCQs | 1 to 10 | 11 to 20 |
| 4 : Moving charges and Magnetism MCQs | 1 to 10 | 11 to 20 |
| 5 : Magnetism and Matter MCQs | 1 to 10 | 11 to 20 |
| 6 : Electromagnetic Induction MCQs | 1 to 10 | 11 to 20 |
| 7 : Alternating Current MCQs | 1 to 10 | 11 to 20 |
| 8 : Electromagnetic Waves MCQs | 1 to 10 | 11 to 20 |
| 9 : Ray Optics and Optical Instruments MCQs | 1 to 10 | 11 to 20 |
| 10 : Wave Optics MCQs | 1 to 10 | 11 to 20 |
| 11 : Dual Nature of Radiation MCQs | 1 to 10 | 11 to 20 |
| 12 : Atoms MCQs | 1 to 10 | 11 to 20 |
| 13 : Nuclei MCQs | 1 to 10 | 11 to 20 |
| 14 : Semi Conductor Electronics MCQs | 1 to 10 | 11 to 20 |
| 15 : Communication Systems MCQs | 1 to 10 | 11 to 20 |
