An atom is excited to an energy level E1 from its ground state energy level Eo. The wavelength of the radiation emitted is:
Correct answer: D. hc/ (E1 - E0)
- A. (E0 -E1) / hc
- B. E1/hc - E0 / hc
- C. (E1 - E0)/ h
- D. hc/ (E1 - E0)
Explanation
When an atom is excited from its ground state energy level Eo to an excited state energy level E1, it can then return to the ground state by emitting a photon with a wavelength given by the following formula:λ = hc / (E1 - Eo)Where λ is the wavelength of the emitted photon, h is Planck's constant (6.626 x 10^-34 Js), c is the speed of light (2.998 x 10^8 m/s), and E1 and Eo are the energies of the excited and ground state energy levels, respectively.Therefore, the wavelength of the radiation emitted by the atom is dependent on the difference between the energy levels of the atom.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Atomic Spectra
Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
Practise Atomic Spectra
356 free Atomic Spectra MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Atomic Spectra questions
The maximum wavelength of Lyman series is:
Which of the following is true for number of spectral lines in going from Lyman series to P-fund series?
Number of the emission spectra are:
Which of the transitions in hydrogen atom emits a photon of lowest frequency (n=quantum number):
The electron in the hydrogen atom makes a transition from n = 2 energy state to the ground state n = 1. The wavelength of emitted photon is:
Shortest wavelength photon in the Balmer series is: