University:
University of North Georgia
Course:
PHYS 1111L | Intro Physics I Lab
Academic year:

2022
Views:

216

Pages:

2
Author:

SpaceCadet101

Practice Problems: Wavelength, Frequency, Energy Content of Our Quantum of Light Key Example A certain photon of light has a wavelength of 422 nm. What is the frequency of the light? c = λv 3.0 x 10^8 m/s = (422 x 10^-9 m) v v = 7.11 x 10^14 /s What is the energy of a quantum of light from part 1? E = hv = 6.626 x 10^-34 J s * (7.11 x 10^14 /s) E = 4.71 x 10^-19 J I. What is the energy of a quantum of light with a frequency of 7.39 x 10^14 Hz? E = hv = 6.626 x 10^-34 J s * (7.39 x 10^14 /s) E = 4.90 x 10^-19 J What is the wavelength of the quantum of light in question 1? c = λv 3.0 x 10^8 m/s = λ * (7.39 x 10^14 /s) λ = 406 nm A certain red light has a wavelength of 680 nm. What is the frequency of the light? c = λv 3.0 x 10^8 m/s = (680 x 10^-9 m) * v v = 4.41 x 10^14 /s 4. What is the energy of a quantum of light from question 3? E = hv = 6.626 x 10^-34 J s * (4.41 x 10^14 /s) = 2.92 x 10^-19 J 5. A certain blue light has a frequency of 6.91 x 10^14 Hz. What is the wavelength of the light? c = λv 3.0 x 10^8 m/s = λ * (6.91 x 10^14 /s) λ = 4.34 x 10^-7 m = 434 nm 6. What is the energy of a quantum of light from question 5? E = hv = 6.63 x 10^-34 J s * (6.91 x 10^14 /s) = 4.58 x 10^-19 J 7. The energy for a quantum of light is 2.84 x 10^-19 J. What is the wavelength of this light? E = hv 2.84 x 10^-19 J = 6.626 x 10^-34 J s * v v = 4.29 x 10^14 /s c = λv 3.0 x 10^8 m/s = λ * (4.29 x 10^14 /s) λ = 7.00 x 10^-7 m = 700 nm

Frequency Wavelength Energy Problems Key

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