Rdiations are always emitted or absorbed in the form of packets of energy. This is the statement of:
Correct answer: D. Planck's quantum law
- A. Rayleigh-Jean's law
- B. Wein's displacement law
- C. Stefan's law
- D. Planck's quantum law
Explanation
The statement that "radiations are always emitted or absorbed in the form of packets of energy" is a fundamental principle of quantum mechanics and is known as the quantization of energy. This concept was introduced by Max Planck in 1900 when he proposed that energy is quantized and exists in discrete packets or "quanta." This idea was a crucial element in explaining the behavior of blackbody radiation and laid the groundwork for the development of quantum theory.
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
Planck's concept was used by:
As the temperature of black body is raised, the wavelength corresponding to maximum intensity:
The electron was discovered by:
In 1900, who proposed a formula which explained in detail the whole shape of the black body spectrum for all wavelengths:
Who proposed quantum theory of radiations?
Black body can be made by: