Q26.A neutron moving with a speed 'v' makes a head on collision with a stationary hydrogen atom in ground state. The minimum kinetic energy of the neutron for which perfactly inelastic collision will take place is : (1) 20.4 eV (2) 10.2 eV (3) 12.1 eV (4) 16.8 eV
What This Question Tests
This multi-concept question combines principles of inelastic collisions with atomic energy levels to determine the minimum kinetic energy of a neutron required to excite a stationary hydrogen atom.
Concepts Tested
Formulas Used
E_n = -13.6/n² eV
K_min = (1 + m₁/m₂) * ΔE
📚 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?
12.5 — 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.
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.
📋 Question Details
- Chapter
- Atoms
- Topic
- Collisions and atomic excitation
- Year
- 2016
- Shift
- 10 Apr Online
- Q Number
- Q26
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 7: Centre of Mass & Collisions, Class 12 Physics Ch 12: Atoms
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