Q20.In Bohr's atomic model of hydrogen, let K, P and E are the kinetic energy, potential energy and total energy of the electron respectively. Choose the correct option when the electron undergoes transitions to a higher level : (1) All K, P and E increase. (2) K decreases, P and E increase. (3) P decreases, K and E increase. (4) K increases, P and E decrease
What This Question Tests
This question tests the ability to relate kinetic, potential, and total energy of an electron in Bohr's atomic model and how these energies change during transitions to higher energy levels.
Concepts Tested
Formulas Used
E = -K
P = -2K
E_n = -13.6/n^2 eV
📚 NCERT Sections This Tests
12.4 — The Ground State Energy Of Hydrogen Atom Is –13.6 Ev. What Are The
Physics Class 12 · Chapter 12
12.4 The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?
12.6 — (A) Using The Bohr’S Model Calculate The Speed Of The Electron In A
Physics Class 12 · Chapter 12
12.6 (a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels.
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
📋 Question Details
- Chapter
- Atoms
- Topic
- Bohr's model for hydrogen atom
- Year
- 2022
- Shift
- 24 Jun Shift 2
- Q Number
- Q20
- Type
- Conceptual
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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