Q17.A particular hydrogen like ion emits radiation of frequency 2. 92 × 1015 Hz when it makes transition from n = 3 to n = 1. The frequency in Hz of radiation emitted in transition from n = 2 to n = 1 will be: (1) 6. 57 × 1015 (2) 2. 46 × 1015 (3) 0. 44 × 1015 (4) 4. 38 × 1015
What This Question Tests
This problem involves using the Rydberg formula for hydrogen-like ions to determine the atomic number from one transition and then calculating the frequency for another transition.
Concepts Tested
Formulas Used
ν = R_H c Z² (1/n₁² - 1/n₂²)
E = hν
📚 NCERT Sections This Tests
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?
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
- Bohr's Model of Hydrogen Atom
- Year
- 2021
- Shift
- 26 Aug Shift 1
- Q Number
- Q17
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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