Q30.A light of energy 12 . 75 eV is incident on a hydrogen atom in its ground state. The atom absorbs the radiation and reaches to one of its excited states. The angular momentum of the atom in the excited state is ๐ฅ โ 15 โ ๐ร 10-17 eVs. The value of ๐ฅ is ______ (use โ= 4 . 14 ร 10 eVs, ๐= 3 ร 108 m s 1)
What This Question Tests
This question tests the ability to determine the excited state of a hydrogen atom after absorbing a photon and then calculate the angular momentum in that state.
Concepts Tested
Formulas Used
E_n = -13.6/nยฒ eV
L_n = n h / 2ฯ
๐ NCERT Sections This Tests
12.5 โ A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 ยท 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.
12.4 โ The Ground State Energy Of Hydrogen Atom Is โ13.6 Ev. What Are The
Physics Class 12 ยท Chapter 12
12.4 The ground state energy of hydrogen atom is โ13.6 eV. What are the kinetic and potential energies of the electron in this state?
12.6 โ (A) Using The BohrโS Model Calculate The Speed Of The Electron In A
Physics Class 12 ยท Chapter 12
12.6 (a) Using the Bohrโs 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.
๐ Question Details
- Chapter
- Atoms
- Topic
- Bohr's model
- Year
- 2023
- Shift
- 01 Feb Shift 1
- Q Number
- Q30
- Type
- Numerical
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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