Q27.Both the nucleus and the atom of some element are in their respective first excited states. They get de-excited by emitting photons of wavelengths λN, λA respectively. The ratio λN is closest to: λA (1) 10−1 (2) 10−6 (3) 10 (4) 10−10 JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper
What This Question Tests
This question requires comparing the energy scales of atomic and nuclear excitations and de-excitations to determine the ratio of emitted photon wavelengths.
Concepts Tested
Formulas Used
E = hc/λ
📚 NCERT Sections This Tests
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.
12.3 — A Difference Of 2.3 Ev Separates Two Energy Levels In An Atom. What
Physics Class 12 · Chapter 12
12.3 A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom make a transition from the upper level to the lower level?
13.4 — Obtain Approximately The Ratio Of The Nuclear Radii Of The Gold Isotope
Physics Class 12 · Chapter 13
13.4 Obtain approximately the ratio of the nuclear radii of the gold isotope 197 79 Au and the silver isotope 10747 Ag .
📋 Question Details
- Chapter
- Nuclei
- Topic
- Excitation and de-excitation
- Year
- 2018
- Shift
- 16 Apr Online
- Q Number
- Q27
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 12: Atoms, Ch 13: Nuclei
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