Radiations emitted by human body lie in which of the following series?
Correct answer: D. None of these
- A. Bracket
- B. Pfund
- C. Paschen
- D. None of these
Explanation
The radiation emitted by the human body is in the form of thermal radiations. This thermal radiation is a continuous spectrum in the infrared region and does not emit the discrete spectral lines of atomic transitions like the series given in the options. The energy levels involved in thermal radiation from the human body are associated with the temperature of the body rather than electronic transitions within atoms. So, the answer is none of these.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
Practise Dawn of Modern Physics
739 free Dawn of Modern Physics 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 Dawn of Modern Physics questions
Total energy of an electron in hydrogen atom when it jumps to higher orbit from a lower orbit is:
Which series is emitted when electron jumps from a higher orbit to fifth orbit?
Laser light is:
In hydrogen spectrum, lyman balmer series belong to which region?
The work function of a metal is 1 eV. Light of wavelength 3000 Å is incident on this metal surface. The velocity of the emitted photoelectrons will be:
A material whose K absorption edge is 0.15 Å is irradiated with 0.1 Å X-rays. The maximum kinetic energy of the photoelectrons emitted from the K-shell is: