When we say that the energy of light emitted by a material is quantized, what do
ID: 1512195 • Letter: W
Question
When we say that the energy of light emitted by a material is quantized, what does that say about how light is emitted (or absorbed) by a material? 1. The total energy emitted or absorbed can take on any possible value.? 2. The total energy emitted or absorbed is in multiples of a minimum energy that is determined by the frequency of the light. 3. The total energy emitted or absorbed is in multiples of a minimum energy that is determined by the intensity of the light? 4. The total energy emitted or absorbed is in multiples of a minimum energy that is determined by the velocity of the light.?Explanation / Answer
2 is correct.the total energy emitted or absorbed is ib multiples of minimum energy that is determined by frequency of light.
German scientist named Max Planck wrote an equation to show this the relationship between energy and frequency of electromagnetic radiation :
E=hf
Through various experiments of Planck and Albert Einstein, it came to be accepted that light has properties of particles as well as waves. Planck’s “quantum” idea became the basis for the modern understanding of atomic structure. In the above equation, as the frequency of radiation increases, its energy increases by the increment “h”. In other words, energy was not continuous, it was quantized – only certain energies are allowed. Continuous energy and quantized energy can be likened to a ramp versus a set of stairs connecting two levels of a building.
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