When white light is passed through cool gases, the spectra we observe are called _.
Correct answer: C. Absorption line spectra
- A. Line spectra
- B. Continuous spectra
- C. Absorption line spectra
- D. Emission line spectra
Explanation
Option C is correct since absorption line spectra occur when passing white light through cool, thin gas. Option A is incorrect since line spectra is a dark or bright line in an otherwise uniform and continuous spectrum.Option B is incorrect since continuous spectra arise from dense gases or solid objects which radiate heat. Option D is incorrect since emission line spectra are a range of frequencies of electromagnetic radiation.
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 spectrum of white light lies:
An Ionic atom which is equivalent to hydrogen atom has wavelength equal to 1/4th of hydrogen lines is
The lifetime of an excited state is:
Which of the following statements is inconsistent with Bohr's set of postulates regarding the hydrogen atom model regarding the emission and absorption of light?
If the wavelength of K X-ray from Cu is 1.337 x 10^-10m, then the energy difference between two levels from which transition results will be:
The branch of physics that deals with the investigation of intensities and wavelengths of electromagnetic radiations emitted or absorbed by atoms is called: