Questions On Light As A Particle And Wave Characteristics (Non-Math)

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Using notes from Light is Energy, Light as a Wave, ElectromagneticSpectrumPicture and Light as a Particle (all not mathematical), answer the following questions.

1) A wave characteristic is wavelength and frequency. Define each and give the most common units these characteristics are measured in.


2) Are frequency and wavelength DIRECTLY or INDIRECTLY proportional to each other. Mathematically, how do you explain this (hint, think math equation).


3) Certain waves can have various speeds (i.e. water waves) but light has one speed called the speed of light (symbol is "c"). What is the value of c ?


4) Using your Electromagnetic Spectrum chart, what is the name of the region of Spectrum that is just higher wavelength than Red (at 700.nm)?____________________________. What is its common name: ________.


5) What is the acronym to remember all the colors of the rainbow in the correct order. ____________
What is the wavelength for violet (in nm) ?________________________


6) What is region of the Spectrum called that is just lower than violet's wavelength? _____________


7) What was the name of the scientist most known for believing that light acts like a particle (he called those discrete energy packets, quanta)? _______________________


8) How did Planck (and others that believed energy acted like a particle) relate energy packet size to frequency of the energy (DIRECTLY or INDIRECTLY). How do you explain this (hint, think math equation) and what is Planck's constant (h).


9) Knowing the relationship between wavelength (λ), frequency (f) and relationship between frequency (f) and energy (E), then what is the relationship between Energy (E) and wavelength (λ)?

10) Knowing the answer from Question 9, which of the two ends of visible spectrum (Red end or Violet end) has the greater energy packet sizes?



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Last edited October 19, 2022 2:29 pm (diff)
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