Q34.Excited hydrogen atom emits light in the ultraviolet region at 2.47 × 1015 Hz. With this frequency, the energy of a single photon is: (h = 6.63 × 10−34Js) (1) 8.041 × 10−40 J (2) 2.680 × 10−19 J (3) 1.640 × 10−18 J (4) 6.111 × 10−17 J
What This Question Tests
This question tests the fundamental concept of photon energy, requiring the application of Planck's equation to calculate energy from frequency.
Concepts Tested
Formulas Used
E = hν
📚 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?
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?
📋 Question Details
- Chapter
- Atomic Structure
- Topic
- Energy of a photon
- Year
- 2014
- Shift
- 12 Apr Online
- Q Number
- Q34
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 2: Atomic Structure
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